Probing Cosmology with Einstein Telescop

Seminario di Fisica Teorica INFN/DIFI

  • Dipartimento di Fisica - A501
  • Seminario

Relatori

Dott. Angelo Ricciardone
Università di Pisa

Dettagli

Einstein Telescope (ET) will be sensitive to detect hundreds of thousands of individual astrophysical sources out to cosmological distances, as well as the stochastic gravitational-wave background (SGWB) of astrophysical or cosmological origin. Two baseline designs are under consideration: a single triangular interferometer and a pair of L-shaped detectors. Each geometry offers distinct advantages and challenges for different science goals.

In this talk, I will first review the ET’s potential to probe key questions in both early- and late-time cosmology. I will then present a recent study of how correlated seismic noise impacts the ability to detect a low-frequency SGWB. Using simulated SGWB data, I will present results from a Bayesian analysis to quantify biases that arise when noise correlations are neglected. Finally, I will discuss the SGWB-search performance of the triangular design against the 2-L configuration, highlighting differences in parameter estimation in the presence of correlated noise.