This week's Lunch Talk will be given by Xiaojun Wu (吴小俊), at 11:30AM Dec. 19th (Thursday) in the 19th-floor Observatory Hall (天文台报告厅).  He will present his work on the “Detections about supermassive black hole binaries“

Abstract: Mergers are fundamental to galaxy evolution, and provide a natural formation mechanism for supermassive black hole binaries (SMBHBs). The SMBHBs at galactic centers have much influence on surrounding stars, which may provide some evidences of their existence. In this talk, I will introduce several theoretical and observational results about such influence.

You are welcome to join the discussion. We will provide boxed food from the faculty canteen. Please sign up via WeChat (Journal Club group) before Dec. 12th (Thur) 9 AM. The boxed food contains two meat dishes and two vegetable dishes by default, please add a * after your name if you want a vegetarian meal. Those who sign up but don't attend on time should pay a￥20 fee for the food, which will be used for future academic activities.