11–14 Nov 2025
Opatija, Croatia
Europe/Rome timezone

Beyond GR tests with Einstein Telescope

11 Nov 2025, 15:50
17m
Opatija, Croatia

Opatija, Croatia

Speaker

Andrea Begnoni

Description

Gravitational waves from compact binary coalescences (CBCs) have become a robust and powerful tool for testing General Relativity (GR), in fact, to date, the LIGO-Virgo-KAGRA collaboration has provided significant consistency tests of GR.
In this talk, I will present forecasts for the precision with which GR can be tested using third-generation interferometers, such as the Einstein Telescope. The anticipated large number of detected sources makes full Bayesian analyses computationally infeasible. To address this, we employ the newly released GWJulia code, which enables studies of large CBC populations using the Fisher information formalism.
Using this framework, we explore the constraints the Einstein Telescope could place on post-Newtonian (PN) coefficients within a hierarchical Bayesian approach. In addition, we will discuss the number of events required to identify deviations from GR at various PN orders and under different detector configurations.

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