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Local Organizers26/05/2025, 14:30
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Poster Presenters26/05/2025, 14:40
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26/05/2025, 15:00
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Poster Presenters26/05/2025, 15:10
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Chris Van Den Broeck, Paolo Pani, Rafael Porto (DESY)26/05/2025, 16:00
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Angelo Ricciardone, Archisman Ghosh (Universiteit Gent), Mairi Sakellariadou26/05/2025, 16:10
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Fiodor Sorrentino26/05/2025, 16:15
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Antonio Riotto (Université de Genève), Irina Dvorkin, Michela Mapelli26/05/2025, 16:20
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Romano Meijer (Nikhef)26/05/2025, 16:25
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Andrew Levan (Radboud University), Giancarlo Ghirlanda (Istituto Nazionale di Astrofisica - Osservatorio di Brera & INFN sezione di Milano Bicocca), Susanna Vergani (LUX, Observatoire de Paris, Université PSL, Sorbonne Université, CNRS, 92190 Meudon, France)26/05/2025, 16:30
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B.S. Sathyaprakash, Monica Colpi, Dr Nicola Tamanini (L2IT / CNRS), samaya nissanke26/05/2025, 16:40
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Romano Meijer (Nikhef)26/05/2025, 16:45
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Micaela Oertel (LUTH, CNRS/Observatoire de Paris), Tania Hinderer, Tim Dietrich (University of Potsdam)26/05/2025, 16:50
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Cristiano Palomba, Ik Siong Heng (University of Glasgow), Marco Limongi26/05/2025, 17:00
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Anna Green (Nikhef), Antonio Perreca26/05/2025, 17:05
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Harald Pfeiffer (Max-Planck-Institute for Gravitational Physics), Laura Bernard, Patricia Schmidt26/05/2025, 17:10
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Andrea Maselli, Michal Bejger (INFN Ferrara & CAMK PAN), Michele Mancarella (Milan-Bicocca)26/05/2025, 17:20
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Anuradha Samajdar, Elena Cuoco, Prof. Gianluca Maria Guidi, Tania Regimbau (LAPP/CNRS)26/05/2025, 17:30
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Max Majoor26/05/2025, 17:35
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Archisman Ghosh (Universiteit Gent), Marica Branchesi (Gran Sasso Science Institute), Michele Maggiore26/05/2025, 17:40
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Jonathan Bratanata26/05/2025, 17:55
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MOUHAMAD HAIDAR LAKKIS (University of Liege, Université Libre de Bruxelles)27/05/2025, 09:00
E-TEST is a low-frequency suspension prototype developed for the Einstein Telescope, featuring a 100-kg test mass cooled to cryogenic temperatures (20–25 K) through radiative cooling techniques. The prototype is designed to provide compact seismic isolation at low frequencies (<10 Hz) while minimizing thermal noise, addressing the critical noise sources for next-generation gravitational-wave...
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Patrice Verdier (IP2I Lyon - IN2P3), Stefano Bagnasco27/05/2025, 09:00
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Francesco Crescimbeni27/05/2025, 09:00
In any extension of General Relativity (GR), extra fundamental degrees of freedom couple to gravity. Besides deforming GR forecasts in a theory-dependent way, this coupling generically introduces extra modes in the gravitational-wave signal. We propose a novel theory-agnostic test of gravity to search for these nongravitational modes in black hole merger ringdown signals. To leading order in...
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Georgy Skorobogatov, Gonzalo Merino, Paul Laycock27/05/2025, 09:10
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Davide Rozza (University of Milano-Bicocca & INFN-MIB)27/05/2025, 09:10
A variety of activities are currently being carried out at the Sos Enattos candidate site, encompassing systematic local noise monitoring, identification and characterization of potential noise sources, as well as engineering and geotechnical investigations. This presentation aims to provide an updated overview of the ongoing research efforts in Sardinia.
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Alexandru Dima (Università Sapienza di Roma)27/05/2025, 09:12
The LIGO-VIRGO-KAGRA observations are so far compatible with the Kerr black hole paradigm, though they cannot rule out entirely the existence of black hole mimickers. These are ultra-compact objects that reproduce some observable properties of black holes, while possibly predicting characteristic signatures such as non-trivial tidal deformability and/or repeated gravitational wave echoes in...
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Lucia Trozzo27/05/2025, 09:15
The 3rd generation instrument era is approaching, and the Einstein Telescope giant interferometer is becoming a reality with the possibility to install the detector in an underground site where seismic noise is 100 times smaller than on surface. Moreover, new available technologies and the experience acquired in operating advanced detectors are the key points to further extend the detection...
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Laura Pezzella (GSSI, INFN)27/05/2025, 09:24
Black hole spectroscopy offers insights into the properties of black hole remnants. However, most models assume idealized, vacuum spacetimes, neglecting the astrophysical environments in which black holes reside.
Our most recent results show that the presence of matter halos, such as dark matter distributions, affects the quasinormal modes (QNMs) of black holes. We examined black holes...
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Nadia Tonello (Barcelona Supercomputing Center), Oscar Reina27/05/2025, 09:30
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Wim Walk (Nikhef)27/05/2025, 09:30
A general high-level overview is presented of the subsurface feasibility studies at EMR. Following a successful borehole campaign in 2024, a seismic campaign is about to finish, adding valuable complementary information to the core logs. A hydro-geological model is being constructed integrating water flow and pressure tests throughout the region. A noise measurement network consisting of...
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Francesco Bianchi (INFN-Perugia)27/05/2025, 09:30
The CAOS (Center for Applications on Gravitational Waves and Seismology) laboratory, part of the ETIC (Einstein Telescope Infrastructure Consortium) project, represents a significant Italian initiative designed for advancing third-generation gravitational wave detector technologies. CAOS has been envisioned as a hub for collaborative innovation and testing, particularly focusing on the...
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Alessandro Agapito27/05/2025, 09:36
The groundbreaking discovery of Gravitational Wave (GW) astronomy in the past decade has significantly advanced our understanding of the gravitational interaction in extreme gravity environments. One of the key scientific goals of future ground-based GW detectors like the Einstein Telescope (ET) is to test Einstein’s theory of General Relativity (GR) and explore the nature of GW sources, such...
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Tobias Eckhardt27/05/2025, 09:45
Current gravitational wave detectors are limited at frequencies below 10 Hz by sensing and control noise related to the active seismic isolation systems and their local displacement sensors.
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In order to overcome these limitations, the use of new, more accurate local displacement sensors, has been proposed.
In this talk I present our current design for a compact local displacement sensor... -
Romeo Felice Rosato (Sapienza Università di Roma & INFN)27/05/2025, 09:48
The quasinormal mode spectrum plays a crucial role in modeling post-merger ringdown signals in binary coalescences, encompassing both black holes and ultracompact horizonless objects. However, quasinormal modes are highly sensitive to small deformations of the system and only describe the linear response within a limited and imprecisely defined timeframe after the merger. Motivated by a...
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Giuseppe Greco27/05/2025, 09:50
The Einstein Telescope (ET) opens a transformative era in gravitational wave astronomy, heralding the onset of big-data-driven multimessenger exploration. In this context, the adoption of interoperable standards promoted by the International Virtual Observatory Alliance (IVOA), becomes crucial for integrating and analyzing diverse and large-scale astronomical datasets. This study proposes a...
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Prof. Andreas Rietbrock (KIT)27/05/2025, 09:50
In August 2024, the Free State of Saxony officially declared its support for the ET site location bit for building the Einstein Telescope in the Lausitz (eng. Lusatia) region. The basement of this region is formed by the Lausitz Granodiorite Massif. The regional extent of the granodiorite is not known for certain, and recent observations contradict the historic geological maps in some...
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Carlo Nipoti (University of Bologna)27/05/2025, 10:00
Binaries of intermediate mass black holes (IMBHs) with masses $M_{\rm bh}=10^2-10^4 M_\odot$ are predicted to emit gravitational waves (GWs) potentially detectable with the Einstein Telescope. Though IMBHs of these masses are widely expected theoretically (and likely hosted in the centre of globular clusters and dwarf galaxies), these objects are very elusive and hard to detect with methods...
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Varun Deshmukh (Institute for Gravitational Research, University of Glasgow)27/05/2025, 10:00
Fused silica fibres used in current ground-based gravitational wave detectors, such as Advanced LIGO, sustain loads of 40 kg with stresses reaching up to ~780 MPa in their thinnest regions. Reducing fibre diameter and increasing stress improves suspension thermal noise performance by improving damping dilution. In addition, the resonant modes are shifted to more favourable frequency ranges...
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Daniel Drimmer (Tractebel)27/05/2025, 10:10
The work carried out in in the candidate site for the Einstein Telescope in the EMR to characterise the functioning of deep groundwater, and its quality will be presented. Particular attention will be paid to new piezometric measurement campaigns, the interpretation of hydraulic tests in boreholes and groundwater sampling campaigns. First data and interpretation will be presented. Future works...
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Lia Lavezzi (INFN Torino)27/05/2025, 10:10
The CTLab4ET (Computing Technology Laboratory for ET) is one of the laboratories funded by the ETIC (ET Infrastructure Consortium) project. Its purpose is to provide the ET Collaboration with a playground where the most recent computing technologies can be tested and benchmarked. Since ET will become operational in about ten years and computing software and hardware evolution is very fast, it...
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Lavinia Paiella (GSSI)27/05/2025, 10:12
Dense stellar clusters provide ideal conditions for the formation of intermediate-mass black holes (IMBHs), i.e. heavy black holes with masses between 100 and 100,000 solar masses. These objects may arise from (i) runaway stellar collisions in light and compact clusters, or (ii) hierarchical binary black hole (BBH) mergers within massive and dense clusters. Assessing the efficiency of both...
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Wanda Vossius (Helmut Schmidt University Hamburg)27/05/2025, 10:15
To reach higher sensitivities in the frequency band below 10 Hz in third generation terrestrial gravitational wave detectors, such as the Einstein Telescope, the individual noise sources must be addressed and their impact on the system reduced. One of these noise sources is thermal noise, to be addressed through operating ET at cryogenic temperatures.
The cooling of the detector will...
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Krishnendu Naderi Varium (University of Birmingham)27/05/2025, 10:24
The properties of the first stars in the Universe, known as Population III (Pop III) stars, and their remnants are still poorly understood. However, the increased sensitivity of next-generation gravitational wave observatories offers the potential to detect mergers of these early compact binaries at redshifts greater than 15. A fraction of these detections will be loud enough, that is, the...
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Esra Zerina Appavuravther27/05/2025, 10:30
This study focuses on optimizing crystalline silicon triangular blade springs for the vertical suspension system of the Einstein Telescope (ET) to enhance cryogenic performance. By leveraging silicon’s high Q-factor and thermal conductivity, the design minimizes thermal noise and ensures efficient heat dissipation at low temperatures. Structural integrity is improved through material selection...
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Quentin Guillemoto (ULiège)27/05/2025, 10:30
The regional 3D model simulating groundwater flows in the candidate site for the Einstein Telescope in the EMR has been updated to better represent the interactions between the underground environment and the tunnels of the future telescope. The mesh around the tunnels has been refined and the injected zone around the tunnel modelled. The new results in terms of flows to be drained and impacts...
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Dr Alberto Iess (CNRS LAPP)27/05/2025, 10:30
I will present the ESCAPE Virtual Research Environment (VRE), focusing on how an R&D gravitational wave pipeline, the Wavelet Detection Filter (WDF) can be run entirely in the ESCAPE Virtual Research Environment (VRE). The ESCAPE VRE is a modular, scalable platform to streamline scientific analysis, minimizing software environment setup and data discovery times. It is composed of an...
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Benedetta Mestichelli (Gran Sasso Science Institute)27/05/2025, 10:36
Population III (Pop. III) stars are ideal candidates for the formation of intermediate-mass black holes (IMBHs, $m = 10^2-10^5\,\rm M_{\odot}$) due to their small mass loss and top-heavy initial mass function. On the other hand, the masses of these IMBHs are typically limited to a few hundred solar masses, restricting their potential as massive black hole seeds. Star cluster dynamics can...
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Conor Mow-Lowry (Vrije Universiteit Amsterdam)27/05/2025, 10:45
The test-masses for ET-LF present one of the most complex hardware design challenges in the whole project. We propose a conceptual design for the towers that is capable in principle of addressing several concerns: rigid mounting of the suspension system; interfaces with the cryogenic and cryogentic vacuum systems; and clean installation and access. The design simplifies the...
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Erika Korb (Università di Padova - INFN)27/05/2025, 10:48
In the last years, gravitational wave detectors proved for the first time the existence of binary black hole mergers. Investigating their formation history can give us an useful insight on poorly constrained binary interaction processes. For instance, the properties of the binary black hole population are heavily influenced by the stability and efficiency of mass transfer events, since...
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27/05/2025, 10:50
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Marc Boxberg (RWTH)27/05/2025, 10:50
Ultrasound transmission measurements on core samples done at Delft University are presented. These measurements include CT-scans of plugs and the matrix density was determined with a pycnometer. Most of the samples are from ETB boreholes, but a few are also from the DZA01 borehole close to Cunnewitz, i.e. Lausitz. (Abstract to be updated later).
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Christian Olivetto27/05/2025, 11:30
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Hadrien Michel (ULiège)27/05/2025, 11:30
In November 2024, the ET-EMR noise characterization team conducted a passive seismic survey in the Euregio Meuse-Rhine (EMR) region, focusing on the area surrounding the Terziet broadband seismic stations (NL.TERZ) at both surface level and a depth of 250 meters. The primary objective of this survey was to identify and characterize the dominant seismic noise sources in the region.
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To achieve... -
Léonard Lehoucq (CNRS, Institut d'Astrophysique de Paris)27/05/2025, 11:30
The stochastic gravitational-wave background (SGWB) generated by the inspiral and merger of binary neutron stars is traditionally modelled assuming that the inspiral is promptly followed by the collapse of the merger remnant to a rotating black hole. While this is reasonable for the most massive binaries, it is not what is expected in general, where a remnant is produced and may survive for up...
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Gary Hemming27/05/2025, 11:30
The ET Members Database (ETMD) serves as the authoritative membership source for the ET Collaboration and is used in the on-boarding and off-boarding of member accounts and in the composition of specific, dedicated mailing-lists, including the Collaboration-wide list. The application is used to track Collaboration member Full-Research-Time Equivalent (FRTE) commitments to Board and Division...
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Manuel Arca Sedda27/05/2025, 11:42
Intermediate-mass black holes (IMBHs) are elusive objects that may link stellar mass and supermassive BHs. Scarce observational evidence and theoretical uncertainties make IMBH mysterious objects whose nature represents an open question of modern astrophysics. If IMBHs form, as supported by the theoretical panorama, through interactions and collisions of stars and stellar BHs, they could be...
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Federica Legger, Paul Laycock27/05/2025, 11:50
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Michael Kiehn (Nikhef)27/05/2025, 11:50
Taking the experience from the 2022 drilling and seismic acquisition campaign on board the subsurface team of the EMR-regions devised a second data acquisition program that was executed from Q2 2024 to Q1 2025. The purpose of the campaign was to enable the construction of a 3D integrated subsurface model in support of civil engineering, and hydrogeological as well as seismic noise modelling....
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Nazanin Davari (INAF Observatory of Rome)27/05/2025, 11:54
The rapid formation of supermassive black holes (SMBHs) in the early universe (z > 6) remains one of the most significant mysteries in the Universe. Observations of SMBHs with masses reaching ~ $10^{10} M_{\odot}$ within the first billion years challenge our understanding of black hole (BH) formation and growth. Despite significant insights from the James Webb Space Telescope (JWST), the...
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Frederik Moers, Romano Meijer (Nikhef)27/05/2025, 12:00
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Divyajyoti . (LIGO Scientific Collaboration)27/05/2025, 12:06
Current gravitational wave (GW) detectors are observing hundreds of binaries in the low-redshift universe, but to fully understand formation mechanisms we must probe the high-redshift regime. Next-generation detectors, such as Cosmic Explorer and Einstein Telescope, will allow us access to redshifts greater than 20, and even upgrades to existing detectors may allow us to probe the...
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Licia Faenza (INGV)27/05/2025, 12:10
The Einstein Telescope (ET) project, a significant leap in gravitational wave observatories, demands an exceptionally stable environment to minimise seismic noise. To ensure the most suitable site selection, we conducted a meticulous ground motion analysis, integrating historical and recent instrumental earthquakes relevant to the area. By utilising ShakeMaps and severe ground motion...
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Vivien Raymond27/05/2025, 12:10
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Dr Fabian Gittins (Utrecht University)27/05/2025, 12:18
Quantum chromodynamics predicts a phase transition from hadronic matter to deconfined quarks at extreme densities, yet its exact nature remains uncertain. Neutron stars offer a unique opportunity to probe this transition, but bulk properties—mass, radius and tidal deformability—provide only indirect signatures, which require many detections to resolve and are ineffective if the discontinuity...
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27/05/2025, 12:30
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David Edwin Alvarez Castillo (Institute of Nuclear Physics Polish Academy of Sciences)27/05/2025, 12:30
Although it is conjectured that a phase transition from hadronic to deconfined quark matter is possible in the ultrahigh density environment in Neutron Stars, the nature of such a transition is still unknown. Depending on whether there is a sharp or slow phase transition, one may expect a third family of stable compact stars or “twin stars” to appear, with the same mass but different radii...
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Ghada Mahmoud27/05/2025, 12:30
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Giovanni Diaferia (INGV - Sezione di Bologna)27/05/2025, 12:30
We present the results of three temporary deployments of seismic arrays, installed in two vertices of a possible configuration of ET in the area of the Italian candidate site (Sardinia). The experiments, aimed at investigating the local noise sources and the seismic velocity structure, were carried out in 2021 and 2024 with different geometrical layouts, number of sensors and total recording...
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Prof. Dorota Rosinska (University of Warsaw)27/05/2025, 12:42
An understanding of differentially rotating relativistic stars is key to many areas of astrophysics, in particular to the emission of gravitational waves. A newly born, proto-neutron star or a compact
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remnant of neutron stars binary merger are expected to rotate differentially and to be important sources of gravitational radiation. A highly accurate and stable, relativistic spectral code is... -
Alessandro Drago (University of Ferrara)27/05/2025, 12:54
Neutron stars having a mass smaller than about 1.17 Ms cannot be produced by any “standard” astrophysical mechanism. On the other hand, the analysis of SAX J1808.4-3658 has suggested a mass of about 0.8 Ms, or smaller (Di Salvo et al. MNRAS 483 (2019) 767) and a similar mass has been obtained by the analysis of HESS J1731-347 (Doroshenko et al. Nature Astronomy 2022). Also, masses and...
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Wathela Alhassan (Nicolaus Copernicus Astronomical Center)27/05/2025, 14:30
A designated area near the Sos Enattos mine (Lula, Nuoro Province, Sardinia, Italy) has been proposed as a candidate site for the Einstein Telescope (ET), a next-generation gravitational wave observatory requiring an exceptionally low-noise environment. To assess infrasound conditions relevant to ET, a set of infrasound microphones was installed at Sos Enattos, both on the surface and...
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Andres Tanasijczuk (Universite catholique de Louvain)27/05/2025, 14:30
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Francesca Spada27/05/2025, 14:30
The Superattenuator has played a pivotal role in enabling the detection of gravitational wave signals in current generation interferometers down to an unprecedented 10 Hz, attenuating the ground motion at that frequency by many orders of magnitude. For next-generation gravitational wave detectors, aiming at improving the sensitivity by more than one order of magnitude and extending the...
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Jonathan Carter27/05/2025, 14:45
Future gravitational wave observatories require significant advances in all aspects of their seismic isolation; inertial sensors being a pressing example. Inertial sensors using gram-scale, high Q factor, glass mechanical resonators combined with compact interferometric readout are promising alternatives to kilogram-scale conventional inertial sensors. We have developed a novel technique for...
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27/05/2025, 14:45
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Peter Achtziger-Zupancic (Fraunhofer IEG)27/05/2025, 14:50
The Einstein Telescope (ET) is a proposed next-generation underground gravitational-wave detector in Europe, anticipated to enhance sensitivity by an order of magnitude compared to existing detectors while extending the observation band down to frequencies as low as 2 Hz. A thorough site characterization is critical for ET, considering geological, hydrogeological, and geotechnical conditions....
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27/05/2025, 15:00
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Tomislav Andric27/05/2025, 15:00
We present the design and performance requirements of GEMINI, the first underground R&D facility dedicated to active seismic isolation and interplatform control for next-generation gravitational-wave observatories. The GEMINI site is located 1.4 km deep at the National Laboratories of Gran Sasso (LNGS). The facility consists of two actively isolated platforms operating in a vacuum, designed to...
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Monica Marzario (Sapienza, University of Rome)27/05/2025, 15:10
The Sardinian site, identified for the underground Einstein Telescope (ET) gravitational wave observatory, features a complex morphology with distinctive geological characteristics typical of stable crystalline basements. The area is also marked by deeply incised valleys, underscoring the need for a detailed and comprehensive understanding of the territory to support site assessment and risk...
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Barbara Garaventa27/05/2025, 15:15
Magnetic noise will pose a significant limitation on the sensitivity of future Gravitational Wave (GW) detectors, such as the Einstein Telescope (ET), especially at low frequencies from a few Hz to approximately 100 Hz. This noise primarily originates from two sources: the natural terrestrial component (Schumann Resonances) and the environmental noise associated with the interferometer...
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Steffen Hahn27/05/2025, 15:15
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Paul Laycock, Steven Schramm (University of Geneva)27/05/2025, 15:30
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Artem Basalaev27/05/2025, 15:30
Angular sensing and control (ASC) noise will play a crucial role in designing the low-frequency interferometer of the Einstein Telescope (ET). We have to ensure at an early design stage of the project that we can achieve tolerable levels of ASC noise that won't limit the target sensitivity of ET. ASC noise arises at the interface of the optical and mechanical systems and sets requirements on...
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Bjorn Vink (Nikhef)27/05/2025, 15:30
Between March 2024 and January 2025, 11 boreholes got cored between 250 - 400 m depth. The total cored depth amounted to about 3600 meters. Four boreholes were finalized as a deep seismometer station, the others as deep piëzometer stations. The subsurface team is still analysing the results of the boreholes and existing geophysical data. Some preliminary findings about the geological...
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Anoop Koushik (BelGrav UAntwerpen)27/05/2025, 15:45
Correlated seismic noise and the resulting Newtonian noise (NN), pose a significant challenge for future gravitational-wave detectors like the Einstein Telescope (ET), especially for low-frequency gravitational-wave background (GWB) searches.
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The body-wave-induced NN could significantly impact ET's sensitivity to GWB by orders of magnitude in its most sensitive frequency band.
This study... -
27/05/2025, 15:45
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Dr Giovanni Luca Cardello (Università degli Studi di Sassari)27/05/2025, 15:50
The Einstein Telescope (ET) will be Europe's next-generation underground interferometric gravitational wave detector. The extreme target sensitivity that these detectors should attain requires underground placement to shield the apparatuses from the ambient noise. A quiet environment in a geologically stable area away from major faults and industrial activities also helps to maximise the duty...
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Sandro Körschner (TU Bergakademie Freiberg)27/05/2025, 16:00Poster
A new large-scale research center is established in Lusatia, the German Centre for Astrophysics (DZA). One part of this will be the Low Seismic Lab (LSL), which is to be built in the Lusatian granodiorite in the region between the eastern German cities Hoyerswerda, Kamenz and Bautzen. This underground laboratory is a place of seismic tranquility, which is required for the trouble-free...
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John Oh27/05/2025, 16:00
The sensitivity of gravitational wave detectors, such as those used in the Laser Interferometer Gravitational-Wave Observatory (LIGO), is significantly affected by various noise sources, many of which are nonlinear and non-stationary. To effectively characterize and mitigate these noise artifacts, we propose a novel methodology that combines Empirical Mode Decomposition (EMD) and the Maximal...
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Mohamed Elbashbishy27/05/2025, 16:00
The Research Center Jülich is part of a collaboration with the RWTH Aachen in developing dedicated items of the UHV system for the ET. One importing item is the protection of the detectors at the three key points of the triangular system. Therefore, a fast-closing shutter system should be developed. The investigations will comprise both numerical simulations, development of a technical system...
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Luca Negri27/05/2025, 16:00Poster
Gravitational-wave (GW) astronomy has become routine with almost 200 GW detections in the ongoing observing run of the current network of ground-based detectors. With the next generation of GW detectors with higher sensitivities being planned, the volume and the complexity of the detected signals are expected to rise dramatically, increasing the computational cost and resources of running...
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Jan Kelleter (RWTH Aachen University)27/05/2025, 16:00
The Einstein Telescope aims to improve sensitivity by at least an order of magnitude compared to current detectors. The dominant noise source in the region of 1 to 10 Hz is expected to be Newtonian Noise (NN) from seismic activity in the surrounding rock. In order to reach the desired sensitivity, NN must be actively mitigated. Seismometers will be installed in boreholes around the mirrors to...
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Niklas Nippe, Tom Niggemann27/05/2025, 16:00Poster
Characterizing the seismic impact of nearby wind turbines is crucial for future gravitational wave detectors like the Einstein Telescope.
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Their vibrations pose a challenge to gravitational wave detection especially in the low frequency range where direct and gravitational couplings are the limiting factors.
This poster will explore and discuss the influence of different wind turbine tower... -
Matteo Montani27/05/2025, 16:00
The next generation of ground-based gravitational wave detectors will push the boundaries of our understanding of the Universe. The Einstein Telescope aims to surpass current observatories by achieving unprecedented sensitivity, particularly at low frequencies. This improvement relies on advanced seismic attenuation systems, crucial for reducing environmental noise and enhancing detection...
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97. Optimizing Hartmann Wavefront Sensor performances for direct measurement of optical aberrations.Matteo Ianni (INFN, Section of Rome Tor Vergata, Rome, Italy. University of Rome Tor Vergata, Department of Physics, Rome, Italy)27/05/2025, 16:00
Increasing the sensitivity of gravitational wave detectors is a highly complex challenge which requires their stable operation at progressively higher power levels. Optical power absorption in the Fabry-Perot cavities leads to thermally induced aberrations that, if not compensated, degrade the interferometer's performance. Therefore, the measurement and correction of these optical aberrations...
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Diana Lumaca (INFN Sezione di Roma Tor Vergata)27/05/2025, 16:00
Future high-power operation of Einstein Telescope (ET) in its high-frequency dedicated incarnation (ET-HF), is expected to amplify the impact of thermally-induced optical aberrations, posing new challenges for beam quality and interferometric stability. Building on the legacy of thermal compensation systems developed for Advanced Virgo, we are currently investigating advanced wavefront sensing...
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Marcello Giroletti (INAF Istituto di Radioastronomia, Bologna (Italy))27/05/2025, 16:00
The detection of information carried by means other than electromagnetic waves has opened a new era in the study of the Universe. Very Long Baseline Interferometry, thanks to its exquisite angular resolution, remains the only technique allowing astronomers to directly image the most compact structures associated with the emission of energetic photons or other carriers of information, as well...
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Andrea Lampis27/05/2025, 16:00
The ET Infrastructure for Optics and Electronics in Cagliari (ETICO2) is a part of the ETIC project aiming at establishing a set of state-of the art laboratories dedicated to optoelectronics and coatings for ET. The facility has been recently established at the Department of Physics of the University of Cagliari as result of a collaboration between INFN and Cagliari University.
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The new R&D... -
Oscar Reina (Barcelona Supercomputing Center), Nadia Tonello (Barcelona Supercomputing Center)27/05/2025, 16:00Poster
The third generation Gravitational Wave detectors such as the Einstein Telescope, and the future instruments for astronomy and astrophysics to be released in the next years will generate an increased amount of data of considerable complexity, that will be available to the astrophysics community. This poses important challenges in order to store, process, integrate, distribute, share and...
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Gregoire Lacaille (University of Glasgow)27/05/2025, 16:00
We present updates on the modelling work happening in Glasgow towards the design of prototypes for the next generation of suspensions. The previous models of advanced LIGO are reviewed, and the effect of deviations from ideal scenarii on the suspension thermal noise are studied. As we make progress towards the definition of parameters for our cryogenic suspension, bond strength trials and...
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Fabián Peña Arellano27/05/2025, 16:00Poster
This presentation provides an update on the feasibility analysis of a novel suspension for the cryogenic test-mass mirrors of the low-frequency detector of the Einstein Telescope. To overcome the severe limitation imposed on traditional suspensions by the tensile stress for simultaneously achieving low thermal noise, safer mechanical margins and high thermal conductance, this configuration...
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Valerio Scacco (Dipartimento di Fisica, Università degli Studi di Roma Tor Vergata; INFN sez. Roma Tor Vergata)27/05/2025, 16:20
The next-generation gravitational wave observatory, Einstein Telescope, requires coatings with extremely low losses to enhance its sensitivity. Our research focuses on the development and characterization of oxide and nitride coatings deposited using sputtering techniques. We investigate how impurities and stoichiometry influence their properties.
To this end, we have established new...
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Ms Sara Al-Kershi (Max-Planck Institute for Gravitational Physics)27/05/2025, 16:20
As gravitational wave detectors continue to advance, enhancing their sensitivity remains a crucial challenge. Performance is limited by various noise sources, including seismic, thermal, and quantum noise. Developing techniques to mitigate these limitations is essential for the development of the Einstein Telescope interferometers.
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The AEI 10m Prototype is a prototyping facility closely... -
Francesca Badaracco (Unige)27/05/2025, 16:20
The Einstein Telescope (ET) and Cosmic Explorer (CE), as next-generation gravitational-wave (GW) observatories, will achieve unprecedented sensitivity, detecting an immense number of GW signals across an extended frequency range. This improvement introduces a fundamental challenge: the presence of overlapping GW events in both time and frequency, complicating signal extraction and parameter...
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Angélique Lartaux (IJCLab)27/05/2025, 16:20
CALVA is an experimental facility at IJCLab (Orsay, France), hosting a 50-m long suspended optical cavity. It is mainly dedicated to quantum noise reduction experiments with the development of an in-vacuum squeezing source and a linear three-mirror cavity as squeezing filter cavity. In this poster I will present the infrastructure, the on-going experiments and the projects foreseen for...
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Hanna Strozyk (University of Warsaw)27/05/2025, 16:20
We investigate the detectability of continuous gravitational waves (CW) - weak, long-duration signals emitted by asymmetric, rotating neutron stars (NS). Despite current gravitational wave detectors not yet providing a confident detection, future instruments, notably the Einstein Telescope (ET), could move CW signals from theory to observation. Our analysis estimates the number of isolated...
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Matteo Schulz (Gran Sasso Science Institute)27/05/2025, 16:20
We explore the potential of cross-correlation between gravitational waves (GWs) and 21 cm intensity mapping (IM) from neutral hydrogen emission (HI), focusing on its role in view of future high-precision observatories, specifically Einstein Telescope (ET) and the Square Kilometer Array Observatory (SKAO). We model the large scale structure evolution by making use of 3D lightcones of the dark...
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Andrea Begnoni27/05/2025, 16:20
Future detectors of gravitational waves will be able to detect tens of thousands of compact binary coalescences every year. It is then important to have a quick and reliable way of performing the parameter estimation of these sources and the most common tool used in the literature for this purpose is the Fisher matrix. During this talk, I will present the open source code GWJulia, which...
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Aaron Goodwin-Jones (UCLouvain)27/05/2025, 16:20
LIGO and Virgo are limited in the amount of power they can build up in the arms. The limitation arises from the absorption of optical power in the main optics, causing mirror surface deformations. This in turns couples scatters light into higher order modes and causes several problems, notably, parametric instabilities, degraded buildup of the control sidebands and limited squeezing...
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Mrs Paola Reggio (CRESME Ricerche)27/05/2025, 16:20Poster
One of the key requirements for achieving the expected sensitivity in detecting weak gravitational waves is to secure an area free from both natural and anthropogenic noise. For this reason, the proposed Italian site for the Einstein Telescope is located adjacent to the former Sos Enattos metalliferous mine in northeastern Sardinia (Province of Nuoro). Sardinia’s unique tectonic setting—as a...
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Dr Federico Armato (UNIGE - INFN Genova)27/05/2025, 16:20
At low frequencies (1-100 Hz), the dominant noise sources for the Einstein Telescope (ET) will be of seismic and magnetic origin. In particular, magnetic noise can be categorized into natural noise, primarily caused by Schumann resonances, and self-inflicted noise, generated by the interferometer’s own electronics.
Based on experience from Virgo, achieving the target sensitivity will...
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Alessandro Pesci (INFN Bologna)27/05/2025, 16:20
Many pieces of evidence point to existence,
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at least at en effective level,
of a lower limiting length of quantum origin.
A mathematical tool is here presented which accomplishes the task
of endowing spacetime with a description of distances
with a minimum length incorporated, meaning that distances between
any two space or time separated points tend to a finite limit
when the points go... -
Alessandro Alberto Trani27/05/2025, 16:20
Black hole binary mergers in dense stellar environments (such as globular clusters or galactic nuclei) are expected to retain non-negligible orbital eccentricity up to the point of gravitational-wave emission. Detecting residual eccentricity at merger would provide a clear signature of dynamical formation channels. Previous studies have suggested that a few percent of stellar-born binary black...
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Monica Marzario (Sapienza, University of Rome)27/05/2025, 16:20
The Code of Conduct defines the expected behaviour within the ET Collaboration and serves as the foundation for maintaining a professional, ethical, and respectful research environment.
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As an international collaboration that brings together diverse cultural backgrounds and work styles, ET values inclusivity and cooperation. Scientific achievements are meaningful not only for their impact but... -
Tobias Reike27/05/2025, 16:20Poster
To estimate the source parameters of a gravitational wave signal from measured strain data, two primary methods are used: Bayesian Inference and Deep Learning. Bayesian Inference provides reliable results but demands significantly more computational resources compared to Deep Learning methods. Thanks to their efficiency, normalizing flows have gained popularity in recent years and are expected...
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Alessandro Parisi (Università di Perugia)27/05/2025, 16:40
This study aims to characterize the seismic noise at the CAOS construction site to support the development and testing of suspension systems for gravitational wave interferometers, such as the Einstein Telescope.
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Dr Thorben Schmirander (University of Hamburg, Institute of Experimental Physics)27/05/2025, 16:40Poster
This contribution addresses a first feasibility study for the measurement of millihertz Gravitational waves (mHz GWs) with a storage ring-based detector design that might aid in noise mitigation for Einstein Telescope (ET) by providing a terrestrial gravity noise (TGN) signal and could potentially enable multiband GW observations from Earth.
We propose an experiment based on the measurement...
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Timo Weckerle27/05/2025, 16:40
The ERC project GRAVITHELIUM investigates full-scale cryogenic mirror suspensions for ET-LF, including a novel concept using static superfluid helium (He-II) inside a titanium marionette suspension tube. To investigate the possible dissipative contribution of the superfluid to the quality factor of the suspension, a low-noise lab-scale He-II supply unit, capable of delivering 400 mW of cooling...
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Jurriaan Langendorff27/05/2025, 16:40
Current state-of-the-art gravitational wave observatories around the world, LIGO, Virgo, and KAGRA, have enabled the detection of $90$ gravitational waves, with an additional $200$ events in the ongoing O4 observing run[ [ref]][1]. This is achieved through strain sensitivities in the order from $10^{-18} 1/\sqrt{Hz}$ to $10^{-23} 1/\sqrt{Hz}$[ [ref][2],[ref]][3], where current noise...
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Andrea Svizzeretto (University of Perugia and INFN Perugia)27/05/2025, 16:40
The work explores the application of Deep Reinforcement Learning (DRL) to optimize the locking procedure of high-finesse Fabry-Perot (FP) cavities, critical components in Gravitational Wave (GW) detectors. Improving and speeding up the locking procedure for a correct resonance acquisition of these cavities aim to improve the detector’s duty cycle, enhancing the Science Mode time (Accadia et...
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Sacha Peters (Université de Liège), Soumen Koley (Université de Liège)27/05/2025, 16:40
Newtonian noise (NN), arising from local density fluctuations due to seismic activities will limit the sensitivity of next-generation gravitational wave detectors at low frequencies. This study explores deep learning models as non-linear algorithms to predict and cancel NN.
As a preliminary experiment prior to obtaining Einstein Telescope data, we utilise data from the Virgo detector,...
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Matteo Scialpi (INFN - University of Ferrara)27/05/2025, 16:40
In this talk we will present a physics-informed autoencoder designed to encode the equation of state of neutron stars into an interpretable latent space. The input polytropic EoS is encoded in the mass, radius, and tidal deformability values of a neutron star. Unlike traditional black-box autoencoders, our approach incorporates additional loss functions to enforce explainability in the encoded...
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Giuseppe Greco27/05/2025, 16:40Poster
The GWmaps webpage (https://virgo.pg.infn.it/maps/) provides an interactive platform for visualizing gravitational-wave sky localizations from the LIGO, Virgo, and KAGRA Collaborations (LVK). This application adheres to the technical standards recommended by the International Virtual Observatory Alliance (IVOA). In this poster, we present GWmaps, highlighting its advanced graphical...
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Matteo Ferro (INAF-OAB)27/05/2025, 16:40
Short gamma-ray bursts (SGRBs) represent a unique class of cosmic events offering valuable insights into the physics of compact object binary systems. From the combined detection of the gravitational wave (GW) event GW170817 with the corresponding electromagnetic counterparts - the kilonova AT2017gfo and the short GRB170817A - interest in compact object binary merger counterparts has...
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Nico Wagner27/05/2025, 16:40
Crystalline AlGaAs/GaAs coatings are a promising low-noise material candidate for high-precision optical metrology due to their low mechanical loss. However, recent studies have revealed excess Brownian thermal noise in optical cavities, which appears to be linked to photoinduced effects. Additionally, there are indications that illumination influences the mechanical loss in GaAs, leading to...
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Mr Shi Yao (Geophysical Institute, Karlsruhe Institute of Technology, Germany;State Key Laboratory of Deep Petroleum Intelligent Exploration and Development, Institute of Geology and Geophysics, Chinese Academy of Sciences, China;University of Chinese Academy of Sciences, China)27/05/2025, 16:40Poster
Understanding the ambient seismic noise field and its attenuation with depth is an important consideration for the decision to build the Einstein Telescope at a proposed site. Here, we perform 2D and 3D ambient noise simulations for the Lausitz region by solving the seismic wave equation using Spectral Element Method (SEM), a high-fidelity numerical technique capable of handling complex...
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Dr Fernando Linsalata (INGV - Roma)27/05/2025, 16:40Poster
The aim of this work is obtaining a preliminary estimate of expected crustal deformation in Sardinia due to geodynamical processes acting on local and regional scales in response to the past and present variations of surface loads. Solving the “Sea Level Equation” for a spherically symmetric, self-gravitating visco-elastic Earth, we characterize the ongoing vertical and horizontal movements in...
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108. The PIP, a novel seismic isolation filter for third-generation gravitational wave observatoriesMichele Vacatello (University of Pisa, INFN Pisa)27/05/2025, 16:40
The low-frequency frontier is amidst the most important challenges for future gravitational waves detectors. Improved low-frequency sensitivity is crucial for detecting high-mass or high-z systems, improving source localisation, enabling timely alerts for electromagnetic follow-ups, and facilitating the detection of predicted gravitational waves from sources like rotating pulsars. In this...
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Patrick Schillings (RWTH Aachen University)27/05/2025, 16:40
At the Einstein Telescope, Newtonian noise is expected to be the dominant noise for low frequencies. Its impact is proposed to be reduced with the help of an array of seismometers that will be placed around the interferometer endpoints. As boreholes for seismometers are expensive, their positions should be optimized. Up to now this was done based on an analytical calculation that makes...
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simone Lombardi (INAF Padova)27/05/2025, 17:00
In gravitational interferometry increasing the measuring laser power is a straightforward way to improve the instrument sensitivity, and it has been one of the main points in the upgrades of the existing detector like VIRGO and in the design of future projects like ET. However, the dissipated portion of the high circulating power in Fabry-Pérot arm cavities is enough to heat up and deform the...
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Piero Chessa (Università degli studi di Perugia / INFN-Perugia)27/05/2025, 17:00
The CAOS research center (Centro per Applicazioni sulle Onde gravitazionali e la Sismologia) is under construction in Perugia to test seismic attenuation systems for ET and Virgo and perform seismological research. Two 13 m tall attenuators are currently being designed and manufactured, based on the Advanced Virgo Superattenuator concept to support a suspended Fabry-Pérot cavity with 100 kg...
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Hanna Skliarova (UNIPD)27/05/2025, 17:00
The COMET (Coating Materials for Einstein Telescope) laboratory of the University of Padua is growing in Rovigo within the ETIC project. This laboratory will be able to produce samples on demand for the international scientific community, fostering the development of new materials and treatments that can, in the future, be reproduced on a large scale to realize the mirrors of ET and other...
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Luciano Antonio Corubolo (Università degli studi di Roma Tor Vergata; INFN Roma Tor Vergata)27/05/2025, 17:00
In the context of gravitational wave detectors, optical aberrations primarily arise from laser absorption in coatings and production process defects in the various optics along the laser path. If uncorrected, these distortions can significantly deviate the detector from its optimal working point, making the interferometer unmanageable and drastically reducing its sensitivity. Therefore, the...
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Francesca Spada, Dr Giovanni Losurdo (INFN Pisa), Dr Leonardo Lucchesi (INFN Pisa), Lucia Trozzo (INFN, sez. Napoli), Manuel Pinto, Paolo Ruggi27/05/2025, 17:00
The Superattenuator is a cornerstone in seismic isolation systems for ground-based interferometers and is indicated as the reference solution for the isolation of the test masses of the Low-Frequency Einstein Telescope.
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However, the need for an update of the Superattenuator arises not as much from the increased sensitivity requirements, as from the need to suspend a heavier, cryogenic... -
Hemendra Singh27/05/2025, 17:00
The E-TEST prototype, developed for the Einstein Telescope—a next-generation gravitational-wave observatory, utilises a 100-kg test mass cooled to 20–25 K using radiative cooling techniques. This system achieves effective seismic isolation below 10 Hz while minimising thermal noise, a key challenge for high-precision measurements. Active isolation successfully mitigates low-frequency seismic...
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Fabrizio Pusceddu (Università di Cagliari - Dipartimento di Ingegneria Civile, Ambientale e Architettura), Marco Moro (Università degli Studi di Cagliari - DICAAR), Massimo Faiferri (Università di Cagliari), Silvia Mocci (Università degli Studi di Cagliari), Stefano Cadoni (Università degli Studi di Cagliari DICAAR), Stefano Mais (DICAAR, Università degli Studi di Cagliari)27/05/2025, 17:00
The Laboratory of Architecture and Territory, whose members are all architects and researchers from the Department of Civil, Environmental Engineering and Architecture (DICAAR) of the University of Cagliari, Italy, explore the potential of designing research infrastructures and their spatial components by considering territorial systems. in recovering the material and immaterial value of a...
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Barbara Garaventa, Dr Federico Armato (UNIGE - INFN Genova)27/05/2025, 17:00
The Italian Einstein Telescope Infrastructure Consortium (ETIC) is an initiative led by INFN aimed at establishing a network of laboratories crucial for the future Einstein Telescope gravitational wave interferometer, alongside characterization efforts for the Sos-Enattos site in Sardinia, Italy. This poster will present the GALILEO project for the Einstein Telescope, planned to be set up at...
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Ms Charlotte Benning (RWTH Aachen University)27/05/2025, 17:00
The Einstein Telescope will consist of 120 km of vacuum pipes with a diameter of 1 m to achieve the required design sensitivity. The BeamPipes4ET project introduces an innovative production concept for these vacuum pipes by manufacturing them on-site in the tunnels through a continuous process using coils of sheet metal. This minimizes the transportation needs - forming the key concept of...
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Enes Turkic (Karlsruhe Institute of Technology)27/05/2025, 17:00
The ERC project GRAVITHELIUM aims to investigate the dissipative behaviour of full-scale suspensions used to cool-down the cryogenic core optics in ET-LF. Two possible suspension concepts are currently considered, using either monocrystalline suspension fibres made of silicon or sapphire, or titanium suspension tubes filled with static He-II. The dissipative behaviour of these suspensions is...
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Federico Marinacci (University of Bologna), Prof. Marco Baldi (University of Bologna)27/05/2025, 17:00
We present a new method for incorporating gravitational wave (GW) sources into cosmological simulations of galaxy formation. Our approach, implemented in the moving-mesh code Arepo, associates the properties of merging binary systems – black hole-black hole, black hole-neutron star, and neutron star-neutron star – with star particles representing a single stellar population (SSP) in...
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Maria Antonietta Palaia (Università di Pisa and INFN-Pisa)27/05/2025, 17:00
Gravitational waves (GWs) detectors have been upgraded over time to enhance their sensitivity, pushing the limits imposed by their infrastructure.
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Next generation observatories, Einstein Telescope and Cosmic Explorer, are currently under design, aiming for significant improvement in sensitivity that can have significant implications in scientific research. Among them, the possibility of... -
Ivan Di Antonio (INAF - Osservatorio Astronomico d'Abruzzo)27/05/2025, 17:00
Thermal gradients in the Input Test Masses (ITM) introduce optical aberrations that pose a critical challenge for both current and next-generation gravitational wave (GW) interferometers, significantly affecting their stability and sensitivity. Using the temperature map obtained through finite element analyses, the optical path difference (OPD) caused by thermal lensing and the deformation of...
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Andreas Mathwieser (Fraunhofer IPT)27/05/2025, 17:00
In ET-HF it is expected that there will be optical aberrations due to thermal deformation of test masses. The aberrations will influence the sensitivity but less is known about the expected aberration order of magnitude or shape. In our study, we tackle the optical measurement of the aberration by simulating the optical read-out via a Hartmann wavefront sensor. We study the sensor components...
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Johannes Bäuerlein (Max Planck Institute for Gravitational Physics (Albert Einstein Institute), Institute for Gravitational Physics of the Leibniz Universität Hannover)27/05/2025, 17:20
The Einstein Telescope, as a third-generation gravitational wave detector, aims to improve the sensitivity of the detection band in the low-frequency region over existing gravitational wave detectors. For this, displacement sensors that provide high sensitivity between 100 mHz and 200 Hz are required for seismic isolation, and the scientific community is striving to increase their sensitivity...
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Prof. Riccardo Sturani27/05/2025, 17:20
Observations of gravitational waves (GWs) from dark sirens measures source locations and distances, whereas galaxies have precise angular positions but no direct measurement of their distances -- only redshifts. By cross-correlating GWs from binary black hole mergers, in spherical shells of luminosity distance DL, with galaxies in shells of redshift z, we project a direct measurement of the...
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Dr Adrian Schwenck27/05/2025, 17:20
In-situ monitoring and a good understanding of adsorption and desorption processes on cryogenic mirror surfaces are essential for the LF interferometers of ET and for ET-Pathfinder. A working group with members from UM, TNO and KIT work on a test setup focusing on two technologies for the monitoring of the growth of monolayers on cold surfaces, ellipsometry and microbalances. This poster...
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Paolo Prosperi (INFN Sezione di Pisa)27/05/2025, 17:20
The pursuit of next-generation gravitational-wave detectors, such as the Einstein Telescope, with its ambitious goals for sensitivity, places extreme demands on the complex systems controlling the position of suspended mirrors. Operating in underground environments with exceptionally low seismic noise and targeting an extended bandwidth from low to high frequencies, these systems require...
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Francesco Crescimbeni27/05/2025, 17:20
The detection of a subsolar object in a compact binary merger is regarded as one of the smoking gun signatures of a population of primordial black holes (PBHs). We critically assess whether these systems could be distinguished from stellar binaries, for example composed of white dwarfs or neutron stars, which could also populate the subsolar mass range. At variance with PBHs, the...
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Ardiana Nela27/05/2025, 17:20
With the plans for ET-LF to operate at cryogenic temperatures, there is a need for advanced, low-noise crystalline suspension systems to reach the required sensitivity goals. Crystalline silicon is a promising candidate for suspension elements due to its favourable properties at cryogenic temperatures, including a high quality factor, high thermal conductivity and advantageous thermoelastic...
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Francesco De Marco (La Sapienza University of Rome and INFN Roma1)27/05/2025, 17:20
The current measurement scheme for a broadband quantum noise reduction in GW detectors relies on 300 m long and detuned filter cavities, that has been stunningly proven in Advanced LIGO and successfully commissioned in Advanced Virgo, for the run O4.
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Nevertheless, they add infrastructural complexity and optical losses on top of an already large instrumental apparatus. Moreover, ET will need... -
Riccardo Brivio (INAF-OAB)27/05/2025, 17:20
In the context of Gamma-Ray Bursts (GRBs) astrophysics, the class of short GRBs is particularly fascinating since they are expected to be produced in compact binary mergers, and to be associated with gravitational wave (GW) events. Double neutron star or neutron star-black hole binaries likely generate another electromagnetic transient, known as Kilonova (KN). As such, with the present and...
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Alessandro Drago (University of Ferrara)27/05/2025, 17:20
We analyze GW190425 and GW170817 within a scenario in which strange quark stars (QSs) coexist with neutron stars. We will conclude that:
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- GW190425 could be a QS-QS merger, producing a supramassive QS;
- a QS-QS merger produces a weak KN signal (which could have passed undetected in the case of GW190425);
- the material ejected in the post-merger is mostly flowing in the equatorial plane,... -
Andrea Moscatello27/05/2025, 17:20
High sensitivity optical measurements, such as those performed in interferometric Gravitational Waves detectors, are prone to stray light noise. Due to the high-quality optics used in the interferometers, light scattering may be dominated by the residual presence of particles. This can be an issue for the next generation detector Einstein Telescope as well as for the present LIGO and Virgo...
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Adriano Frattale Mascioli (Virgo)27/05/2025, 17:20
Gravitational-wave (GW) observations of compact binaries have the potential to unlock several remarkable applications in astrophysics, cosmology, and nuclear physics through accurate measurements of the source luminosity distance and inclination. However, these parameters are strongly correlated when performing parameter estimation, which may hamper the enormous potential of GW astronomy. We...
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Markus Bachlechner (RWTH Aachen University), Tim Kuhlbusch (RWTH Aachen University)27/05/2025, 17:20
Prediction and mitigation of noise can increase the sensitivity of future gravitational wave detectors like the Einstein Telescope. These mitigation techniques could reduce noise from sources that can be independently measured, like seismic, electromagnetic, or acoustic disturbances. Wiener filters are a common technique that has been tested in current detectors. We are exploring the potential...
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Dr Leonardo Lucchesi (INFN Pisa)27/05/2025, 17:20
The CAOS (Centro per Applicazioni sulle Onde gravitazionali e la Sismologia) facility is currently under construction in Perugia, Italy. It will host a short Fabry-Perot cavity to carry out dedicated R&D on seismic attenuation systems for ET, specifically enabling the development of two AdV-like Superattenuators (SAs), a technology that represents the ET reference solution as envisaged in its...
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Francesco Flocco (INFN)27/05/2025, 17:20
An ideal design of the Einstein Telescope would assume perfect coatings and alignment, and would foresee no polarization leakage. However, non-idealities, such as residual reflectivity of antireflection coatings or residual transmissivity of mirrors, a number of “ghost beams” are generated. These are beams that should nominally not exist, serve no purpose and are not directly handled and...
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Marco Toffano (INFN Padova)27/05/2025, 17:40
In the current Virgo setup, quantum noise reduction is achieved by injecting squeezed vacuum states in the interferometer dark port. For their generation and phase stabilization with respect to the interferometer carrier, low-noise phase locked loops (PLL) and direct digital synthesizers (DDS) are used. An RF-mixer based architecture is under investigation for the development of an...
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Dr Andrea Pavan (INAF-Osservatorio Astronomico di Padova)27/05/2025, 17:40
The advent of the Einstein Telescope (ET) will revolutionize our understanding of binary neutron star (BNS) mergers, with a huge number of gravitational wave (GW) detections expected every year, spanning about 10 billion years of cosmic history. As demonstrated by the GW170817 event, the greatest scientific potential is held by multi-messenger observations combining the GW signal with the...
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Cristiano Ugolini (GSSI, SISSA)27/05/2025, 17:40
The first direct detection of gravitational waves (GWs), back in 2015, marked the beginning of a new era for the study of compact objects, and the upcoming next-generation detectors, such as Einstein Telescope (ET), are expected to add hundreds of thousands of compact binary coalescences to the list. We discovered up to 90 GW signals, from which we were able to put some constrains on the...
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Mr Giovanni Antinozzi (SISSA - Scuola Internazionale Superiore di Studi Avanzati)27/05/2025, 17:40
The present generation of interferometers has demonstrated that gravitational-wave observations, even in the absence of electromagnetic counterparts, i.e. dark sirens, can serve as an independent method to investigate the Hubble tension. However, while the proposed designs for the Einstein Telescope (ET) can produce astonishingly precise $H_0$ measurements, it has been shown that incorrect...
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Mr Shreevathsa Chalathadka Subrahmanya (University of Hamburg)27/05/2025, 17:40
Precise displacement sensing with femtometer or sub-femtometer readout noise at frequencies below $10\,\mathrm{Hz}$ is extremely beneficial for the ET active isolation systems. Here, we present a laser interferometric sensor, named heterodyne cavity-tracking, designed for high-precision relative displacement readout. The scheme utilizes a heterodyne-stabilized optical cavity, incorporating the...
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Nicola Borghi27/05/2025, 17:40
Galaxy catalogs can be combined with gravitational wave observations to provide cosmological constraints through the dark siren method. However, host galaxies may be missed in the catalogs due to observational effects, potentially weakening the constraints and introducing systematics. At the same time, galaxy catalogs can include galaxy properties - such as the stellar mass - that can be...
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Demetrio Magrin (INAF - Osservatorio Astronomico di Padova)27/05/2025, 17:40
MezzoCielo, meaning "half of the sky," represents one of the most advanced developments in the class of all-sky survey telescopes. This revolutionary design is built around a fully spherical refractive optical element, filled with a highly transparent, low-refractive-index liquid, and surrounded by a large array of identical cameras. By leveraging this unique optical architecture, MezzoCielo...
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Maria Lisa Brozzetti (Università degli Studi di Perugia - Ligo-Virgo-Kagra and ET Collaboration)27/05/2025, 17:40Poster
UpGLADE is an upcoming extensive galaxy catalogue which will include more than a billion objects from various non-independent surveys, providing redshift information, which is fundamental for gravitational-wave (GW) cosmology – particularly for Hubble constant inference using dark sirens and galaxy catalogue. Moreover, UpGLADE will play a crucial role in multi-messenger astronomy by supporting...
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Dr Marco Angelucci (INFN - LNF)27/05/2025, 17:40
Electrostatic charging on the surfaces of the optical elements is a limiting noise source for gravitational wave detectors (GWD) already at room temperature. The charge accumulation has been already observed in LIGO and possibly in Virgo.
The electrostatic charging mechanism of the mirrors may be mainly caused by local electrostatic (LIGO) or electro-magnetic (Virgo) controls.
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Another... -
Dr Matteo Pais (INAF - Osservatorio astronomico di Padova (OAPD))27/05/2025, 17:40
The gravitational waves from the binary neutron star merger GW170817 were accompanied by a multiwavelength electromagnetic counterpart, which confirms the association of the merger with a short gamma-ray burst (sGRB). The afterglow observations implied that the event was accompanied by a narrow, ~5°, and powerful, ~1e50 erg, jet. We study the propagation of a Poynting flux-dominated jet within...
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Matteo Tagliazucchi27/05/2025, 17:40
Gravitational waves (GWs) from merging compact binaries have opened a new window into cosmology and fundamental physics, allowing precise tests of General Relativity (GR) and measurements of cosmic expansion. However, with the advent of future GW observatories, it is necessary to develop efficient and robust tools capable of handling the growing volume of data. In this talk, we present CHIMERA...
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core optics chairs28/05/2025, 08:30
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Nicole Busdon28/05/2025, 08:55
One of the most critical components of gravitational wave interferometers is their mirror test masses, as coating thermal noise is a primary limiting factor in the 20–2000 Hz frequency range. For this reason, one of the two nested interferometers composing Einstein Telescope (ET-LF) is designed to operate under cryogenic conditions. However, characterizing both mechanical and optical losses in...
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Filippo Greco (Istituto Nazionale di Geofisica e Vulcanologia - Sezione di Catania)28/05/2025, 09:00
We present the results of a gravimetric study conducted in the Sos Enattos mining site (northeastern Sardinia), an area identified as the Italian site for the potential underground installation of the Einstein Telescope (ET), a third-generation gravitational wave detector.
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Currently, the ET project is in its preparatory phase, with efforts focused on performing feasibility studies for... -
Andrea Cimatti28/05/2025, 09:00
Euclid is an ESA space mission launched in July 2023, designed to produce an all-sky map of galaxies with unprecedented precision. The mission will survey 14,500 square degrees with its Wide Survey, providing photometric redshifts for galaxies in the range $0<z<2$ and spectroscopic redshifts between $0.84<z<1.98$. Additionally, Euclid will conduct a Deep Survey covering 53 square degrees,...
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Luciano Antonio Corubolo (Università degli studi di Roma Tor Vergata; INFN Roma Tor Vergata), Maria Cifaldi (Tor Vergata-INFN)28/05/2025, 09:10
The increasing power levels injected into interferometric gravitational wave detectors have highlighted the impact of localized defects on the high-reflectivity (HR) surfaces of the main optics. These defects, originating from coating inhomogeneities, substrate imperfections, or localized absorbers, can degrade detector performance by introducing aberrations in the optical wavefront, leading...
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Yannick Forth (ULiège)28/05/2025, 09:20
The de-risking of the geologic structures in the EMR is a crucial step in the preparation of the Einstein Telescope. Alongside active seismic and gravimetry, Deep Electric Resistivity Tomography surveys are a key instrument to identify and characterize large structures in the subsurface.
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We present the geologic interpretation of a Deep ERT profile in Val Dieu, Belgium crossing the Booze... -
Dr Lorenzo Amati (INAF - OAS Bologna)28/05/2025, 09:24
The huge luminosity, the redshift distribution extending at least up to z~10 and the association with the explosive death of very massive stars make long GRBs extremely powerful probes for investigating the early Universe (pop-III stars, cosmic re-ionization, SFR and metallicity evolution up to the “cosmic dawn”) and measuring cosmological parameters. At the same time, as demonstrated by the...
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Guido Zavattini (University and INFN - Ferrara)28/05/2025, 09:25
At the Department of Physics and Earth Sciences at the University of Ferrara we have a sensitive polarimeter for birefringence measurements of both substrates and coatings. In the configuration for substrate measurements the polarimeter is based on two co-rotating half-wave plates with the sample between them. The induced time dependent ellipticity signal is then extracted using a heterodyne...
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Core optics chairs28/05/2025, 09:40
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Matteo Di Giovanni (La Sapienza Università di Roma - INFN Roma)28/05/2025, 09:40
We present an evaluation of how site dependent noise can affect the signal to noise ratio (SNR) of compact binary coalescence (CBC) signals in the future 3rd generation gravitational wave (GW) detector Einstein Telescope (ET). The design of ET is currently pushing the scientific community to study its scientific potential with respect to known, and possibly unexpected, GW signals using its...
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Marc Andrés-Carcasona (IFAE), Mario Martinez28/05/2025, 09:45
We present an updated estimation of the noise induced by scattered light inside the main arms of the Einstein Telescope (ET) gravitational wave detector. Both ET configurations for high- and low-frequency interferometers are considered. The new studies include the cryotrap areas close to the main mirrors, consider both 10km and 15km arms, and explore possible mis-alignments of the laser beam...
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Sofia Bisero28/05/2025, 09:48
The Einstein Telescope (ET) will enable an unprecedented number of binary neutron star system merger (BNS) detections, extending beyond the Local Universe and revolutionizing gravitational wave (GW) multi-messenger (MM) astrophysics. To fully exploit the great scientific potential of MM observations of such events, an observing strategy has to be prepared well in advance of ET operations.
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A... -
Sacha Peters28/05/2025, 10:00
Newtonian noise (NN), arising from local density fluctuations due to seismic activities will limit the sensitivity of next-generation gravitational wave detectors at low frequencies. This study explores deep learning models as non-linear algorithms to predict and cancel NN.
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As a preliminary experiment prior to obtaining Einstein Telescope data, we utilise data from the Virgo detector, which... -
Daniel Voigt (University of Hamburg), Oliver Gerberding (Universität Hamburg, Institut für Experimentalphysik)28/05/2025, 10:00
As straylight is an important limitation for the sensitivity of gravitational wave detectors, we investigate new laser operation concepts and interferometer topologies for a more straylight-resilient detector configuration.
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Our main focus is the use of tunable coherence realized by phase modulation following a pseudo-random-noise (PRN)-sequence on the interferometer laser. This breaks the... -
Nandini Hazra (NCBJ Warsaw)28/05/2025, 10:00
Next-generation gravitational wave (GW) observatories such as the Einstein Telescope (ET) will observe large numbers of binary neutron star (BNS) mergers across cosmic history and allow us to obtain precise parameter estimates for the events observed at low redshifts. The Vera Rubin Observatory will be a powerful instrument in the discovery and follow-up of optical counterparts of BNS mergers...
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Prof. Tomasz Bulik28/05/2025, 10:12
I will review the connection between binary neutron star mergers, cosmic rays, and ultra high energy neutrinos. I will discuss the possibility of a multimessenger joint detection of gravitational waves and neutrinos from such mergers.
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Mikhail Korobko28/05/2025, 10:15
Quantum noise is one of the main limitations to sensitivity in both the low- and high-frequency interferometers of ET. Reaching the design sensitivity requires the use of frequency-dependent squeezing, which relies on long filter cavities and minimizing losses throughout the entire interferometer. Achieving this is challenging, both technologically and fundamentally. However, considering the...
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Soumen Koley (University of Liege)28/05/2025, 10:20
Limburg, a region located in the cross-border area between The Netherlands, Belgium, and Germany is the Euregio-Meuse-Rhine candidate site for hosting the Einstein Telescope. Recent studies to investigate the site’s subsurface suitability for hosting Einstein Telescope has seen several boreholes being drilled and deployment of arrays of geophones on the surface. In this study we present a 3D...
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Alberto Colombo (INAF - OAR)28/05/2025, 10:24
The Einstein Telescope (ET) will extend the reach of gravitational wave (GW) astronomy for stellar-mass compact binaries to unprecedented distances, significantly enhancing opportunities for multi-messenger discovery. Building on the landmark observations of GW170817 and informed by our recent population modeling studies (Colombo et al. 2022, 2024), we investigate the prospects for detecting...
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Andrea Cozzumbo28/05/2025, 10:36
Gravitational wave (GW) and multi-messenger (MM) astronomy provides new ways to gain insights into the Dark Energy (DE) phenomenology, through the distance-redshift relation, as well as into potential deviations from General Relativity (GR), via the distance duality relation. Both analyses involve the same astrophysical observables, making MM astronomy a powerful tool to explore simultaneously...
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Stan Bentvelsen (Nikhef)28/05/2025, 10:40
Modeling seismic waves to Newtonian Noise is of critical importance to understand the impact on the instrument of residual noise at the vertices of ET. The models that currently exist are considered not sufficiently sophisticated to appropriately take into account the layered structural geology in the EMR region. Plans and deliverables are presented to develop the required models to resolve...
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Francesco De Marco (La Sapienza University of Rome and INFN Roma1)28/05/2025, 10:45
Quantum Noise (QN) limits the sensitivity of ground-based Gravitational Wave (GW) interferometers (ITF) across all the frequency bandwidth (10Hz - 10kHz) [1]. Current detectors are designed to achieve broadband QN Reduction (QNR) via frequency-dependent squeezing (FDS) generated in reflection of a 300 m long detuned filter cavity (FC) that is coupled with a frequency-independent squeezing...
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Michele Moresco28/05/2025, 10:48
The Wide-field Spectroscopic Telescope (WST) is an innovative 12-meter-class facility that combines a large field of view (3 square degrees) with a high-multiplex (30,000) multi-object spectrograph operating in both medium- and high-resolution modes (MOS). Additionally, it features a giant panoramic integral field spectrograph (IFS) covering 3×3 square arcminutes.
WST will produce the...
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Dr Mike Lindner (DESY - DZA)28/05/2025, 11:30
The Lausitz is the third potential site to host the Einstein Telescope (ET). Site characterization is in progress since late 2023 based on the ongoing survey for a planned underground laboratory „Low Seismic Lab“ (LSL). The LSL will be a central part of the Deutsche Zentrum für Astrophysik (DZA, German Center for Astrophysics) which is currently being established. Site requirements for the LSL...
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Ricardo Cabrita (UC Louvain)28/05/2025, 11:30
Increasing the optical circulating power in gravitational-wave detectors is a straightforward way of increasing detection sensitivity. However, current detectors are limited in the amount of achievable circulating power far below the design values. Optical absorption in the test masses and main optics leads to thermal effects that shift the eigenmodes of the optical cavities and cause control...
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Balázs Kacskovics28/05/2025, 11:30
In this presentation, I will introduce one of our group's ongoing projects, which aims to utilize the post-Newtonian approach implemented in CBwaves for waveform hybridization. In the initial phase, we will assess the compatibility of CBwaves with available numerical waveforms from the SXS collaboration before progressing toward the development of a hybrid model. I will provide an overview of...
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Marcus Haberland (Max Planck Institute for Gravitational Physics (Albert Einstein Institute))28/05/2025, 11:42
We present SEOBNRv5THM, an accurate and fast gravitational-waveform model for quasi-circular, spinning, non-precessing binary neutron stars (BNS) within the effective-one-body (EOB) formalism. It builds on the binary-black-hole approximant SEOBNRv5HM and, compared to its predecessor SEOBNRv4T, it i) incorporates recent high-order post-Newtonian results in the inspiral, including higher-order...
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Gabriele Capoccia (INFN-PG)28/05/2025, 11:45
The CAOS facility in Perugia serves as a specialized lab for testing mechanical and optical systems for the Einstein Telescope (ET). It will host a seismic-isolated Fabry-Perot cavity. The current research and development efforts include testing ET's full-sized Super Attenuators, creating integration tools and procedures for lateral-entry payload access at the base of the tower, and evaluating...
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28/05/2025, 11:50
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Sayak Datta (GSSI)28/05/2025, 11:54
With the observation of the multiple binary inspirals, we begin to question whether the components of the binary are black holes or some exotic compact objects (ECOs). The "black holeness" or the deviation from it can be tested in several ways. The distinguishing feature of a black hole from ECOs in the presence of the horizon. This surface acts as a one-way membrane that absorbs energy. Due...
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Luisa Spallino28/05/2025, 12:00
In the upcoming third generation of gravitational wave (GW) detectors, the unavoidable build-up of a frost layer on cryogenically cooled mirrors and their electrostatic charging may represent two potentially critical showstoppers for GW detection. We already proposed a possible mitigation solution for both such issues, relying on irradiation with low energy electrons (from 20 to few hundreds...
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Simona Procacci (U. Geneva)28/05/2025, 12:06
There are a few examples where the accuracy of theoretical predictions is running ahead of that of experiments. One is the case of gravitational waves naturally sourced by hydrodynamical fluctuations in a thermal medium. These signals are motivated by the Standard Model of particle physics, predicting that, for the first three hundred thousand years, the fundamental constituents of the matter...
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Marco Ricci28/05/2025, 12:15
The Amaldi Research Center (ARC), located at Sapienza University of Rome, will host the first experiment of a cooling system designed for a full-scale cryogenic payload. Following the solid conduction cooling approach, two refrigeration lines, each driven by two Pulse Tube cryocoolers, will be used to cool down a cryogenic payload housed in a specially designed 3-meter-tall cryostat.
The...
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Elena Codazzo28/05/2025, 12:18
The search for continuous gravitational waves (CWs) with the third-generation detector Einstein Telescope (ET) will face new challenges due to the increased presence of coalescing binary signals. Indeed, thanks to the improved sensitivity, ET will detect O(1e5) compact object coalescences per year. Moreover, its extended frequency range, reaching down to nearly 5 Hz, will allow the detection...
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Lorenzo Pierini (Istituto Nazionale di Fisica Nucleare)28/05/2025, 12:30
Wide-band searches for continuous gravitational waves are essential to reveal unknown neutron stars that may be close enough to us to be detectable. Currently, analyses performed on data from 2G detectors for unknown sources cover all possible sky directions, but are restricted in the rotational parameters by their computational cost and by the limited bandwidth of the detectors at low...
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Prof. Aniello Grado (Dipartimento di Fisica e Geologia, Università degli Studi di Perugia, Perugia, Italia; INFN-Sezione di Perugia), Emanuele Tofani (Università degli studi della Campania "Luigi Vanvitelli"-INFN Napoli), Dr Stefania Gravina (Dipartimento di Matematica e Fisica, Università degli studi della Campania “Luigi Vanvitelli", Caserta, Italia; INFN-Sezione di Napoli)28/05/2025, 12:30
A significant challenging feature of the ET vacuum system is the requirement on the hydrocarbon partial pressure ($p_{hy}$) for molecules heavier than 100 atomic mass unit (amu), as explained in the ET design report
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\begin{equation}
p_{hy}\le1\cdot10^{-14}\,mbar
\end{equation}
In order to reach such an ambitious result, both the non volatile and volatile residue of hydrocarbons should... -
Ines Giudice28/05/2025, 12:42
Gravitational waves offer a promising opportunity to investigate the explosion mechanism behind the Core-Collapse Supernovae, as they are expected to originate from the oscillations of the proto-neutron star formed during the collapse. The third-generation detector Einstein Telescope (ET), with its sensitivity to low-frequency signals, could detect GW signatures from Core-Collapse Supernovae....
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Andrew Spencer28/05/2025, 12:45
The Glasgow Cryogenic Interferometer Facility (GCIF) is one of the prototype facilities working in the ET Collaboration to develop technology, demonstrate integration and prove the concepts and validate the technology readiness of critical elements for the cryogenic Einstein Telescope LF detector.
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We report here on the progress of the instrument science program of the GCIF, including the... -
Andrea Simongini (INAF - Osservatorio Astronomico di Roma), Fabio Ragosta, Silvia Piranomonte28/05/2025, 12:54
The Vera Rubin Observatory’s (VRO) Legacy Survey of Space and Time (LSST) will revolutionize time-domain optical astronomy, detecting faint sources down to r~27.5 mag and generating nearly 32 trillion observations over 10 years. Among these, ~10 million will be supernovae (SNe), covering a wide range of redshifts and enabling studies of known and rare types, progenitors, and strongly lensed...
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Dr Enis Belgacem (Université de Genève)28/05/2025, 14:30
I will discuss a recent first-principle derivation of the spectral features of astrophysical stochastic backgrounds produced by populations of compact binary coalescences (CBCs). The treatment is based on the observation that, among the parameters characterizing a CBC, some of them (extrinsic) are distributed uniformly following symmetry principles, while other (intrinsic) carry the more...
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Prof. Dorota Rosinska (University of Warsaw), Dr Vincenzo Napolano (EGO Communication Responsible)28/05/2025, 14:30Talk
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Matteo Serra28/05/2025, 14:35
The communication of Italy's candidacy to host the Einstein Telescope is gaining momentum through multiple channels: institutional communication (website and social media), events at international, national, and regional levels — especially in the candidate area — and media engagement.
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In this talk, we will present the latest updates on ongoing initiatives. -
Niccolò Muttoni28/05/2025, 14:42
The subtraction of the astrophysical foreground to reveal an underlying cosmological stochastic background poses a significant challenge for third-generation detectors. We present a novel approach for characterizing the confusion noise originating from the superposition of undetected astrophysical sources and the residuals from the subtraction of resolved signals, where we average the...
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Henk Schroen (Nikhef)28/05/2025, 14:50Talk
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Dr Francesco Iacovelli (Johns Hopkins University)28/05/2025, 14:54
Binary black hole systems are typically assumed to evolve in vacuum. However, the environment surrounding the binary components can influence their properties, such as their tidal deformability, affecting the gravitational waveform produced by the binary and its interpretation in gravitational wave data analysis.
In this talk, focusing on next-generation experiments, such as the Einstein...
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Dr Mike Linder28/05/2025, 15:05Talk
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Costantino Pacilio28/05/2025, 15:06
Gravitational waves provide a powerful means to perform null tests of strong-gravity physics. Statistical methods based on hierarchical inference, adapted from population studies, have been developed to confidently identify potential signatures of new physics. While these methods are well-suited for detection, they provide limited insight into how exotic physics depends on standard degrees of...
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Davide Rozza (University of Milano-Bicocca & INFN-MIB), Matteo Di Giovanni (La Sapienza Università di Roma - INFN Roma)28/05/2025, 15:18
We present an evaluation of how site dependent noise can affect the signal to noise ratio (SNR) of compact binary coalescence (CBC) signals in the future 3rd generation gravitational wave (GW) detector Einstein Telescope (ET). The design of ET is currently pushing the scientific community to study its scientific potential with respect to known, and possibly unexpected, GW signals using its...
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Gideon Koekoek (Maastricht University)28/05/2025, 15:20
In the Summer of 2024, the Discovery Museum in Kerkrade and Maastricht University started the Einstein Telescope Education Centre (ETEC), a four-storey exhibition and learning facility for gravitational waves and its instrumentation, intended for upper classes of secondary education in the EMR-region. In one year of operation, ETEC has hosted many school classes, giving them a day-programme on...
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Michael Ebersold (University of Zurich)28/05/2025, 15:30
This talk will present the analysis of the first ET MDC using the pygwb pipeline to search for an isotropic stochastic background. We compare the measurement to the theoretical prediction derived from the list of sources and quantify the differences, providing valuable insights into stochastic searches in the presence of high signal-to-noise ratio signals. Additionally, we will discuss the...
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Giuseppe Greco28/05/2025, 15:30
ETIC Lab Journey is an interactive web app designed to explore the laboratories of the ETIC (Einstein Telescope Infrastructure Consortium) project, an initiative by the Italian Ministry of University and Research, led by the National Institute for Nuclear Physics (INFN). Launched in 2023, the project has two main objectives: conducting a feasibility and site characterization study in Sos...
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Angelo Adamo (INAF/IASF Palermo)28/05/2025, 15:38Talk
The title of this paper, a clear paraphrase of Eugene Wigner’s renowned essay on the role of mathematics in the natural sciences, is intended to highlight the epistemological significance of analogical reasoning—a process that the history of science has shown to be pivotal across numerous domains and in a wide range of discoveries. The resemblance between concepts, the referencing and...
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Jan Harms28/05/2025, 15:42
Several uses of the null stream have been proposed, which indicate a fundamental advantage provided by the null stream for the detection and analysis of GW signals. In my talk, I will review and scrutinize the arguments, and I will conclude that we do not have a convincing argument yet that the ET null stream indeed offers a fundamental benefit to GW data analysis.
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Matteo Tuveri (Università di Cagliari e INFN Cagliari)28/05/2025, 15:46
Primary and lower secondary school students are naturally curious, often exhibiting a "little scientist" attitude. However, curiosity alone is not enough for developing structured scientific thinking, essential for their education. We present the GRAVIS project, an educational program which brings together gravitational waves physics and digital storytelling to engage students in inquiry-based...
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Andrew Spencer28/05/2025, 15:54Talk
The joint GR24 and Amaldi16 meeting will be held in Scotland, July 2025 and we are excited to share the public outreach and engagement program with the ET community. At the GR/Amaldi conference there will be two public lectures from Erin MacDonald and Carole Mundell. At the public lecture we will be running an exhibition showcase of outreach demonstrations and invite all participants to share...
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Gideon Koekoek (University of Maastricht)28/05/2025, 16:30Talk
Gravitational wave science, and instrumentation in particular, has a surprisingly strong connection to the typical secondary curriculum in secondary education. As such, Einstein Telescope offers great opportunities for teachers and students, and is ideally suited to show students that they too can understand the newest discoveries, practice the physics of their high school curricula in an...
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Harsh Narola28/05/2025, 16:30
Gravitational wave (GW) detectors routinely encounter transient noise bursts, known as glitches, which are caused by either instrumental or environmental factors. Due to their high occurrence rate, glitches can overlap with GW signals, as in the notable case of GW170817, the first detection of a binary neutron star merger. Accurate reconstruction and subtraction of these glitches is a...
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Tom Dooney28/05/2025, 16:42
Gravitational wave (GW) interferometers detect faint signals from distant astrophysical events but are also highly susceptible to background noise. Among these noise sources are transient glitches, which can mimic or obscure astrophysical signals. The next-generation Einstein Telescope (ET) will offer unprecedented sensitivity that will yield significantly higher detection rates and enable the...
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Martin Hendry (University of Glasgow), Marek Biesiada (NCBJ), Prof. Dorota Rosinska (University of Warsaw), Gideon Koekoek, Sascha Rieger (LVK/LISA/ET)28/05/2025, 16:45
The Einstein Telescope (ET) Preparatory Phase project is a Horizon Europe-funded infrastructure project that aims to support critical activities of the ET community in the preparatory phase of the experiment, including technical design, costing and site selection for the observatory and identification of ET’s scientific, socio-economic and environmental impact. Work Package (WP) 10 of ET-PP...
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Matteo Scialpi (INFN - University of Ferrara)28/05/2025, 16:54
Unmodeled data analysis techniques in the LVK collaboration, particularly coherent Wave Burst (cWB), do not assume any physical constraints when detecting GW events. While this allows for the detection of unmodeled signals with great efficiency, it limits the ability to accurately estimate source properties in the case of CBCs. Physics-Informed Neural Networks (PINNs) offer a promising...
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Adrian Macquet28/05/2025, 17:06
With a sensitivity ~10 times that of current-generation gravitational wave (GW) detectors, the Einstein Telescope (ET) should be able to observe thousands of compact binary coalescence (CBC) signals per day, up to a redshift z=20. However, the high rate of signals calls into question whether existing data-analysis methods are directly applicable to ET data. Mock data challenges (MDCs) are...
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Yuliya Hoika (University of Warsaw), Dr Vincenzo Napolano (EGO Communication Responsible)28/05/2025, 17:15Talk
In this session, we’ll dive into the Einstein Telescope’s supranational social media activities. Over the past months, we’ve accelerated our efforts - launching new profiles, broadening our reach, and sharing a diverse range of content. Together, we’ll examine real examples and brainstorm ways to elevate our strategy. We’ll use the “Rose–Bud–Thorn” exercise to highlight successes, identify...
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Dr Filippo Santoliquido (Gran Sasso Science Institute (GSSI))28/05/2025, 17:18
The Einstein Telescope (ET) and other third-generation (3G) gravitational wave (GW) detectors will be key instruments for detecting gravitational waves (GWs) in the coming decades. However, analyzing the data and estimating source parameters will be challenging, especially given the large number of expected detections—between $10^4$ and $10^5$ per year—which makes current methods based on...
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Lucia Papalini (University of Pisa and INFN Pisa)28/05/2025, 17:30
Third-generation ground-based gravitational wave detectors such as the Einstein Telescope are expected to significantly advance our understanding of compact binary coalescences. One of the most critical challenges in data analysis for the Einstein Telescope is that of overlapping signals. With a tenfold improvement in sensitivity, the Einstein Telescope will be able to detect binary black hole...
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Thibeau Wouters (Utrecht University)28/05/2025, 17:42
Third-generation (3G) gravitational wave (GW) observatories will unveil a cosmic orchestra, detecting thousands of sources annually. However, their increased detection rate poses a major challenge for data analysis. Existing, widely used techniques to obtain the source parameters are prohibitively expensive, creating a bottleneck for extracting scientific insights from 3G detector data. We...
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Sascha Rieger (LVK/LISA/ET), Dr Livia Conti (INFN), Dr Isabel Cordero28/05/2025, 17:45
We will develop first ideas for interesting & informative visual outreach materials, exploring the science, technology, international team & social impact of the Einstein Telescope. We are looking for input from ET members across the project, working in different areas and roles.
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Prof. Simona Tondelli29/05/2025, 09:00
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Prof. Marco Pallavicini29/05/2025, 09:05
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Prof. Roberto Ragazzoni29/05/2025, 09:10
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Dr Fabio Florindo29/05/2025, 09:15
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Harald Lueck, Michele Punturo (INFN)29/05/2025, 09:20
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Eugenio Coccia29/05/2025, 09:40
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Michele Maggiore29/05/2025, 09:55
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Mikhail Korobko, Ulyana Dupletsa (GSSI)29/05/2025, 10:25
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Antonio Zoccoli (INFN), Jorgen D'Hondt29/05/2025, 10:45
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Jonathan Gair29/05/2025, 11:30
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Roberta Zanin29/05/2025, 11:50
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Marco Circella29/05/2025, 12:10
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Mariya Lyubenova29/05/2025, 12:30
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Matthew Evans29/05/2025, 12:55
(remote)
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Mario Martinez29/05/2025, 14:45
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Fiodor Sorrentino29/05/2025, 15:10
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Alessandro Variola (Istituto Nazionale di Fisica Nucleare)29/05/2025, 15:30
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Patrick Werneke29/05/2025, 15:50
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Andreas Freise, Fernando Ferroni (INFN Roma 1)29/05/2025, 16:10
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Patrice Verdier (IP2I Lyon - IN2P3), Stefano Bagnasco29/05/2025, 17:05
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Jan Harms, Stefan Hild29/05/2025, 17:35
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Steffen Grohmann (KIT)29/05/2025, 17:55
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Mikhail Korobko29/05/2025, 18:15
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Andreas Rietbrock (Geophysical Institute, Karlsruhe Institute of Technology, Germany), Andreas Rietbrock30/05/2025, 09:00
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Theo Reinders (Nikhef)30/05/2025, 09:20
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Giovanni Bisoffi30/05/2025, 09:40
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Günther Hasinger30/05/2025, 10:00
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Elena Cuoco30/05/2025, 10:20
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Michele Punturo (INFN)30/05/2025, 10:40
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Paul Laycock30/05/2025, 11:30
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Yuliya Hoika (University of Warsaw)30/05/2025, 11:50
In recent months, the Einstein Telescope Preparatory Phase (ET-PP) communication group has undertaken several key initiatives to strengthen the project’s visibility, cohesion, and engagement with diverse audiences. We will present the newly developed ET webpage, designed to serve as a central, accessible platform for sharing updates, project milestones, and outreach materials. We will also...
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Francesca Spada30/05/2025, 12:10
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30/05/2025, 12:25
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Michele Punturo (INFN)30/05/2025, 12:30
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Yuliya Hoika (University of Warsaw)
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Jonathan Perry
Next-generation gravitational wave detectors like the Einstein Telescope face new challenges that require advanced simulation tools capable of capturing both linear and non-linear effects. Although frequency-domain models offer valuable insights into linear processes, they fall short when addressing the complex non-linearities inherent in these systems. Given the computational intensity of...
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TBD (E=mc2)
Initial results are presented on geomechanical rock measurements and geotechnical evaluations. Alternative construction scenarios are discussed to accommodate the detector design in the subsurface. (abstract to be updated later)
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Jessica Steinlechner
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Ulyana Dupletsa (GSSI), Valeria Sequino
In the planning of a third-generation detector such as the Einstein Telescope, it is crucial to study the impact of technological limitations on the sensitivity, and in turn on the scientific output. In this study, we analyze a set of sensitivity curves corresponding to different technological choices, including worst-case scenarios where each limiting factor is individually considered. We...
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Frederik Moers, Romano Meijer (Nikhef)OtherTalk
For the detection of gravitational waves with the Einstein Telescope very high requirements regarding sensitivity must be met. The telescope is designed to be able to detect changes in length twenty-six orders of magnitude below its own size. Due to the required sensitivity the number of disturbance factors, such as seismic noise, that must be overcome, is extensive. This leads to the...
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