SAIFR:3854

Cosmology with gravitational waves

(2023). Cosmology with gravitational waves. ICTP South American Institute for Fundamental Research. https://scivideos.org/index.php/ictp-saifr/3854

Cosmology with gravitational waves. ICTP South American Institute for Fundamental Research, Sep. 20, 2023, https://scivideos.org/index.php/ictp-saifr/3854 

          @misc{ scivideos_SAIFR:3854,
            doi = {},
            url = {https://scivideos.org/index.php/ictp-saifr/3854},
            author = {},
            keywords = {ICTP-SAIFR, IFT, UNESP},
            language = {en},
            title = {Cosmology with gravitational waves},
            publisher = { ICTP South American Institute for Fundamental Research},
            year = {2023},
            month = {sep},
            note = {SAIFR:3854 see, \url{https://scivideos.org/index.php/ictp-saifr/3854}}
          }
Isabela S. Matos
Talk numberSAIFR:3854
Source RepositoryICTP – SAIFR
Collection
Talk Type Conference
Subject

Abstract

Gravitational waves (GWs) are probes of the cosmological model since, as electromagnetic waves, they travel across the largest distances in our Universe. These signals can also track generic modifications of General Relativity on large scales, especially when combined with other cosmological probes. There are several methods for using such fascinating signals to learn more about cosmology. For instance, GWs are distance indicators, and similarly to supernovae, they allow reconstructions of a distance-redshift relation when the latter can be inferred from electromagnetic counterparts emitted by the same source or known indirectly via binary population studies or galaxy catalogs. In this colloquium I will discuss some of the current methods for doing cosmological parameter estimation and tests of gravity with GWs, focusing on studies of future multi-messenger observations and on combinations of GW data with large-scale structure surveys.