Events
Astronomy Colloquium (7.12/2022)：Feeding and Feedback of Low-luminosity AGNs: A Multi-wavelength Perspective
Description
Title: Feeding and Feedback of Low-luminosity AGNs: A Multi-wavelength Perspective
Speaker: Zhiyuan Li（李志远）
Abstract:
Supermassive black holes (SMBHs) are now believed to play a key role in regulating the evolution of their host galaxy, via radiation and mechanical outflows generated by accretion onto the SMBH, which are collectively known as active galactic nucleus (AGN) feedback. The past decades have witnessed a tremendous effort in understanding the SMBH-host galaxy coevolution, along with an unprecedented connection between the AGN community and the galaxy community. Despite this significant progress, our current picture of AGN feeding and feedback is far from a complete one, owing to the multi-scale and multi-phase nature of the problem. In this talk, I will introduce our recent and ongoing studies on some of the key unresolved features of low-luminosity AGNs (manifestation of weakly-accreting SMBHs), in particular on how they are normally fed and whether they launch an energetic outflow, based on high-resolution X-ray, optical and radio observations and assisted with hydrodynamic simulations.
Bio:
Zhiyuan Li is a Professor of the School of Astronomy and Space Science at Nanjing University. He obtained his Bachelor and Master degrees in Astronomy at Nanjing University and PhD degree in Astrophysics at the Univ. of Massachusetts, Amherst. He was then a postdoc at the Smithsonian Astrophysical Observatory and an assistant researcher at UCLA, before joining the faculty of Nanjing University in 2013. His research is focused on high-energy astrophysics in the context of galaxy evolution, using a multi-wavelength approach.
Time:10:00-11:00AM, 7/Dec, Wednesday
Venue: Room 508 (large seminar room), Department of Astronomy
