NPA Zoom Seminar, Stefania Amodeo, Cornell University, “Halo gas thermodynamics from the CMB: results from the Atacama Cosmology Telescope DR5”

Event time: 
Thursday, October 15, 2020 - 1:00pm to 2:00pm
Online () See map
Event description: 

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.
I will present recent results from the Atacama Cosmology Telescope DR5 and Planck in combination with the CMASS galaxy catalogs from the Baryon Oscillation Spectroscopic Survey. These new SZ results achieve high signal-to-noise measurements of the electron density, temperature and pressure distribution around galaxies that we use to constrain the effects of feedback and non-thermal pressure, estimate the effect of including baryons in the modeling of galaxy-galaxy lensing measurements, and test cosmological simulations.
This is a Zoom seminar: