Speaker: Dr. Andrea Morandi, TAU
Title:: UNDERSTANDING THE PHYSICS OF GALAXY CLUSTERS
Abstract:
In this talk, I will review the physics of galaxy clusters, focusing on what can be learned from Xray, Sunyaev Zel'dovich and lensing observations, hydrodynamical numerical simulations and on the recent development on the modeling of both dark matter and intracluster medium. I will discuss entropy profiles, scaling properties, the profiles of the temperature of the gas and how they compare to the dark matter 'temperature' in constraining the non-gravitational processes which affect the thermal history of the gas, as well as how we can use galaxy clusters as cosmological probes. Then I will discuss the first determination of the intrinsic shapes and the physical parameters of both dark matter and intra-cluster medium in triaxial galaxy clusters, by combining X-ray, weak and strong lensing observations: this novel method has important consequences in recovering the desired physical parameters of galaxy clusters and cosmological parameters in a bias-free way.