Title: Jet-mode AGN Feedback in L* Galaxies and Galaxy Clusters

Speaker: 郭福来

Institute:上海天文台

Host: 杜敏

Time: 10.26 周四 14:30-16:30

Location: 物理楼552

Abstract: 

The astonishing phenomenon of active galactic nucleus feedback has received a lot of attention in the literature, and yet poses one of the central unsolved problems in contemporary astronomy. Theoretically jet-mode AGN feedback is often required to play a key role in galaxy quenching and the evolution of massive galaxies. Observational evidence is most significant in galaxy clusters, where the interaction of radio jets and X-ray emitting hot gas has been frequently observed. In galaxies, however, evidence for negative feedback of AGN feedback is strongly lacking. In this talk, I will focus on the similarity and difference of jet-mode AGN feedback in galaxy clusters and L* galaxies. For the former, I will present some of our recent works on the physics of jet-mode AGN feedback in galaxy clusters. For the latter, I will use the Milky Way as an example of L* galaxies and discuss our recent jet-shock model of the Fermi bubbles. I will try to give a complementary picture of jet-mode AGN feedback on the high mass end of the galaxy luminosity function, from L* galaxies to brightest central galaxies in clusters.

Bio：

Prof. Fulai Guo is a faculty member in the astrophysics division of Shanghai Astronomical Observatory (SHAO), currently leading a computational astrophysics research group. He received his B.S. degree in astrophysics from University of Science and Technology of China in 2001, and a PhD in Physics from University of California, Santa Barbara in 2008. He then worked consecutively as a postdoctoral researcher at University of California Santa Barbara and at University of California Santa Cruz (UCO/Lick Observatories). In 2012-2015, he was a Zwicky prize fellow at Swiss Federal Institute of Technology Zurich, and in 2015 he joined SHAO. He is a theorist with a wide range of research interests including black hole accretion and feedback, stellar feedback, galaxy evolution, cosmic ray astrophysics, etc.

Related paper: 

https://ui.adsabs.harvard.edu/abs/2020ApJ...894..117Z/abstract