Northwestern Events Calendar

Dec
1
2015

Yuan Li: Heating in Simulated Galaxy Clusters with Momentum-driven AGN Feedback

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

Description:

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

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