报告题目：Chandra Deep Field-South: Toward Understanding the Demography of Distant Obscured AGNs

　　报 告 人：薛永泉教授（中国科技大学）。

　　摘    要：Highly obscured active galactic nuclei (AGNs) escaping even the deepest X-ray surveys are often thought to be comparably numerous to unobscured and moderately obscured AGNs. These sources are necessary for fitting the cosmic X-ray background emission in the 10-30 keV band and play a crucial role in the black hole/galaxy evolution history. In this talk we present some recent efforts in searching for highly obscured AGNs in the Chandra Deep Field-South (CDF-S). We discuss the properties and implications of the highly obscured AGNs/AGN candidates identified through these efforts. We also discuss future prospects to identify more highly obscured AGNs/AGN candidates.

　　时    间：10月18日（周五）下午15：30

　　地    点：苏富特三楼会议室

　　欢迎各位老师、同学参加！

                                             南京大学天文与空间科学学院