Speaker
Description
The large-scale structure (LSS) of the Universe has traditionally been mapped through galaxy surveys. The third generation (3G) of gravitational wave (GW) detectors, such as the Einstein Telescope and Cosmic Explorer, will provide an independent probe for LSS using compact binary mergers as tracers of the underlying matter distribution in the Universe. In the 3G era, we will be able to measure the LSS properties, such as clustering bias and the baryon acoustic oscillations feature, solely from GW localization observations. These measurements could shed light on the astrophysical origins of the compact binaries by observing the redshift evolution of their clustering properties. In combination with cosmological surveys such as the Square Kilometer Array, Euclid, and the Vera C. Rubin Observatory, the 3G detector network will be able to constrain cosmological parameters and the structure formation history of the Universe. This talk will review strategies for probing multi messenger LSS observations, highlight the scientific opportunities, and discuss the challenges that must be addressed to realize their full potential.