题 目： Supermassive Black Hole Binaries and Their Observational Signatures

报告人：Prof. 刘富坤

北京大学

摘 要:

Supermassive black hole binaries (SMBHBs) are expected by the hierarchical galaxy formation model in ΛCDM cosmology. A binary may become stalling at the parsec scale and is expected to be detected in nearby normal gas-poor galaxies, which are have not yet comfirmed by observations because we do not have efficient methods to detect them. In this talk, I will introduce a possible method to detect a SMBHB in normal galaxies. As in the hierarchical galaxy formation model, today's galaxies are the product of frequent galaxy merging, triggering the activity of active galactic nuclei in gas-rich mergers. During the talk, we will also investigate the interaction of SMBBHs and an accretion disc and show that the stalling can be avoided due to reached, which would give rise to the rich observational signatures.

时 间：2009年7月15日上午10:00

地 点：（北京西路2号）紫台大楼327教室

紫金山天文台学术委员会学术交流工作委员会

2009年7月8日