Our Lunch Talk of this week will be given by Dr. Luming Sun(孙鹿鸣) at 11:00AM Thursday(Apr. 11th) in the 19th-floor Observatory Hall (天文台报告厅).

The title of the talk is " Inflows directly feeding black hole accretion disk in quasars".

Here is the Abstract:

He will introduce a recent work (submitted to Natur.) which is lead by Professor Hongyan Zhou. Almost all massive galaxies have supermassive black holes in their centers. They generally experience quasar phases when the black holes rapidly grow. How the supermassive black holes are feeded is still unresolved. Zhou et al. detected the inflows that directly feeding the black holes in quasars using absorption lines. This work provides a new tool to probe the bulk of the so far elusive fueling inflows in quasars. It may help address some of the fundamental questions concerning accretion physics, the onset and sustainment of quasar activity, and the SMBH growth at centers of most galaxies.

Dr. Sun is a post-doctoral research fellow of our department.