Learning cosmology from gravitational waves (GWs) is mainly limited by the lack of redshift information from most GW events, the so-called dark standard sirens. Various methods to measure the Hubble constant have been proposed recently and have been applyed to data from 2nd generation detectors, of which stands out the use of galaxy catalogs as prior information on the redshifts of dark...

The effective-one-body (EOB) approach is a powerful formalism that maps the two-body problem in general relativity into the motion of a single body in an effective metric. EOB-based waveform models are nowadays providing fast and accurate templates for comparable-mass coalescing compact binaries, where the latter are the events observed by the currently operating detectors. Third-generation...

This talk concerns the computation of the stochastic gravitational wave (GW) background generated by black hole-black hole (BH-BH) hyperbolic encounters with eccentricities close to one and their comparison with the respective sensitivity curves of planned GW detectors. In this study we took into account hyperbolic encounters that take place in clusters up to redshift 5 and with BH masses...

In the present study, we have extended our previous investigation of the reliability of the Hartle–Thorne slow-rotation approximation relative to fast rotation by using the LORENE library to investigate the impact of the applied dynamical models on the determination of the observable quantities. We aimed to construct sequences of rigidly rotating equilibrium configurations at different...

The analysis of the properties underlying the population of compact objects in the Universe provides crucial insights into the astrophysical processes governing the formation and evolution of these sources. Third-generation (3G) gravitational-wave interferometers, that will detect a larger and more distant population of sources, offer a groundbreaking opportunity to study the formation and...

In the last decade, the concept of Open Science has gained traction: there is a real effort to make tools shareable among different communities on dedicated platforms and great attention is given to the so-called FAIRness of data, i.e. data must be Findable, Accessible, Interoperable and Reusable.

OSCARS (Open Science Cluster’s Action for Research and Society) is an European project that...

Accurate modeling of binary black hole (BBH) dynamics is crucial for the detection of gravitational waves emitted by them. We focus on the so-called "orbit-averaged" spinning BBH system at the second post-Newtonian (PN) order. We discover that it is a Hamiltonian system and we present its Hamiltonian. We then establish that it is an integrable system (one that possesses action-angle variables...

The secular evolution of precessing compact binaries on eccentric orbit to second post-Newtonian–order, with leading-order spin-orbit, spin-spin, and mass quadrupole-monopole contributions included and arbitrary mass ratios leads to a spin dynamics expressed as a closed system of first-order differential equations. In it, black hole, neutron star, boson star or gravastar compact binary...