Speaker
Description
Baryonic feedback processes play a central role in the evolution of galaxy formation and in the interpretation of cosmological constraints from galaxy surveys. The thermal Sunyaev-Zel’dovich (tSZ) effect traces this feedback by probing hot gas content over a broad redshift range. We cross-correlate Atacama Cosmology Telescope DR6 tSZ y-map and the Dark Energy Survey Year 6 galaxy positions to constrain halo bias-weighted mean electron pressure in six tomographic redshift bins up to $z \sim 1.1$. We assess the impact of cosmic infrared background (CIB) contamination by comparing angular power spectra from different deprojected y-maps. Furthermore, we define suitable scale cuts to complement a halo occupation distribution modeling framework. We compare our constraints with existing literature and check the compatibility with latest results pointing towards a higher baryonic feedback.