Speaker
Description
Gravitational redshift and Doppler effects give rise to an antisymmetric component of the galaxy correlation function when cross-correlating two galaxy populations or different tracers. Relativistic effects can be isolated from density and redshift space distortions (RSDs) clustering signals by splitting the galaxy population into two catalogs and using adapted estimators, such as the dipole of the cross-correlation function. Spectroscopic galaxy surveys, specifically the Dark Energy Spectroscopic Instrument (DESI) at low redshift and Euclid at higher redshift, will allow us to extract the signal with high significance across a wide range of scales. In this talk, I will discuss the prospects of measuring this observable in the near future. I will present forecasts for DESI and Euclid based on N-body simulations and discuss the potential challenges in modelling this signal on large and small scales.
