题目：A Good Hard Look at Cosmic Supermassive Black Hole Growth
报告人：Niel Brandt, Pennsylvania State University
时间地点：周五, 2019.1.11上午10:00-12:00, 物理楼552
Abstract: The 7 Ms Chandra exposure on the Chandra Deep Field-South (CDF-S) has provided the most sensitive extragalactic X-ray survey by a wide margin. About 1050 X-ray sources have been detected, primarily distant active galactic nuclei (AGNs) and starburst/normal galaxies. The unmatched deep multiwavelength coverage for these sources allows superb follow-up investigations, revealing the details of supermassive black hole growth over most of cosmic time. I will briefly describe the sources in the 7 Ms CDF-S and highlight some exciting science results. The latter will include (1) evidence for black-hole vs. bulge co-evolution in the distant universe; (2) constraints on supermassive black hole growth in the first galaxies as revealed by direct detection and stacking; and (3) the discovery of a representative of a new population of faint, fast X-ray transient sources. Finally, I will discuss some future prospects for X-ray surveys of AGNs in the distant universe including the ongoing 5 Ms XMM-SERVS survey of the LSST Deep Drilling Fields and new X-ray missions.
Niel Brandt is the Verne M. Willaman Professor of Astronomy & Astrophysics and a professor of physics at the Pennsylvania State University. He obtained his PhD at the Institute of Astronomy, Cambridge University in 1996. Then he held a postdoctoral fellowship at Harvard-Smithsonian Center for Astrophysics, and then took the faculty position of Penn State University in 1997. He is best known for his work on active galaxies, cosmological X-ray surveys, starburst galaxies, normal galaxies, and X-ray binaries. Prof. Brandt has won numerous awards for his research, among which are Newton Lacy Pierce Prize, American Physical Society Fellowship, Thomson Reuters Highly Cited Researcher, Bruno Rossi Prize, etc. He has published more than 500 referee journal papers with more than 44,500 citations.