NPA Zoom Seminar, Stefania Amodeo, Cornell University, "Halo gas thermodynamics from the CMB: results from the Atacama Cosmology Telescope DR5"
The thermodynamic properties of the ionized baryons in galaxies, groups, and clusters encode the effects of the assembly history and feedback processes that shape galaxy and cluster formation. These properties can be studied through the imprints that the scattering of cosmic microwave background (CMB) photons off the free-electron gas in galaxies and clusters leave on high resolution CMB maps: the thermal and kinematic Sunyaev-Zel’dovich effects.