Bangs, fizzles, and whistles - the physics of AGN feedback in galaxy clusters

Date: 
03/31/2021 - 3:00pm to 4:00pm
Location: 
Online by Zoom
Speaker(s) / Presenter(s): 
Christopher Reynolds (University of Cambridge)
Type of Event (for grouping events):

The need for AGN feedback in the cores of galaxy clusters has been long established- without the energy injection by jetted AGN in the central galaxy, we believe that the intracluster medium (ICM) would undergo a cooling catastrophe, leading to prodigious star formation and galaxy building in contravention with observations.  However, the actual physical mechanisms that govern the AGN feedback cycle remain elusive.  In this talk, I will discuss the possible physical process by which the central AGN can heat the ICM.  I will present a series of studies that, step-by-step, move us away from a simple hydrodynamic picture and force us to treat the ICM as a weakly collisional plasma with important properties governed by non-trivial kinetic physics.

 

Zoom Recording: https://uky.zoom.us/rec/share/KJ27-i3LbcWzxliPLFwhB2tPE-xMj43IbtwwGZkRP7IuIjzXhGwsk4wcHuNH0sde.byF_p5cyNdvVl9EG