Speaker
Description
The thermal Sunyaev-Zel’dovich effect measures the thermal pressure of clusters, providing a path towards understanding baryon distribution and cosmic structures in the universe. In this talk, I will discuss our work on cross-correlating galaxies from the Dark Energy Spectroscopic Instrument (DESI) and high-resolution CMB maps from the Atacama Cosmology Telescope (ACT) to measure the stacked thermal Sunyaev-Zel’dovich signal, which we achieve with a very high SNR. I will also discuss the discuss the effects of the Cosmic Infrared Background on our measurement and our interpretation of the results, as well as possible combinations with similar measurements of the kinematic Sunyaev-Zel’dovich effect on the same galaxy sample. This work has been submitted to PRD and is posted on the ArXiv at https://arxiv.org/abs/2502.08850.