Speaker
Description
In this talk, I would like to highlight some key results from our RayGal studies of the impact of general relativistic effects on the apparent distribution of large-scale structures down to non-linear scales. We have investigated the dipole of the halo-halo cross-correlation from the 150 Mpc/h scale to the 5 Mpc/h scale. At large scales, we recover the linear expectation while at scales smaller than 30-60 Mpc/h the gravitational redshift contribution dominates together with non-trivial couplings. We have also investigated the impact of the magnification bias on the 3x2pts cross-correlation between gravitational convergence and the matter density field. At linear and quasi-linear scales, we recover Class analytical results while at smaller scales interesting deviations and effects appear (lensing bias, Finger-of-God effects, non-trivial couplings). I would be happy to discuss with workshop participants about new relativistic observables in the non-linear regime of structure formation.
