Turbulence and non-thermal pressure in galaxy clusters
Title: Turbulence and non-thermal pressure in galaxy clusters
Speaker: Xun Shi (石洵, Yunnan University)
Time: 10:00 am, April 19 (Friday)
Location: Lecture Hall, 3rd floor
Abstract: Galaxy clusters are promising probes for cosmology, and yet, their astrophysical complexity leads to significant systematical bias as shown by the Planck CMB-cluster discrepancy. Turbulence in the intracluster medium (ICM) and the corresponding non-thermal pressure are a central piece of the astrophysical complexity that has not been well-explored. I will present recent developments in this area, and in particular, discuss a largely neglected effect - the influence of ICM density stratification on turbulence dissipation, as well as its role in shaping the typical radial distribution of ICM turbulence.