When:
Tuesday, December 1, 2015
4:00 PM - 5:00 PM CT
Where: Technological Institute, F160, 2145 Sheridan Road, Evanston, IL 60208 map it
Audience: Faculty/Staff - Student - Public
Contact:
Liz Lwanga
(847) 491-3645
Group: Physics and Astronomy Astrophysics Seminars
Category: Academic
Title: Heating in Simulated Galaxy Clusters with Momentum-driven AGN Feedback
Speaker: Yuan Li, University of Michigan
Host: Claude-André Faucher-Giguère
Abstract: AGN feedback is widely considered the major heating source to prevent a classical cooling flow in the center of galaxy clusters. Numerical simulations have shown that momentum-driven AGN feedback can suppress cooling successfully and reproduce cluster properties generally in good agreement with the observations. However, exactly how the jet is coupled to the intra-cluster medium is still unclear. In this work, we study how much heating comes from shock waves, and how much from turbulent dissipation in a simulation where cooling is balanced by AGN feedback. We also examine how the importance of different heating processes changes as a function of time, distance to the center, and the thermal properties of the gas.
Keywords: Physics, Astronomy, Astrophysics