Bangs, fizzles, and whistles - the physics of AGN feedback in galaxy clusters
|Date||14 April 2021|
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.