Title: The Intermediate-mass Black Hole Reverberation Mapping Project 

Speaker: Hengxiao Guo 

 
Abstract: Numerous stellar-mass black holes and supermassive black holes have been identified throughout the Universe, yet intermediate-mass black holes (IMBHs) remain elusive. These IMBHs are crucial for unraveling the history of black hole formation, particularly during the early stages of the Universe. Moreover, IMBH-IMBH binaries represent prime targets for future space-based gravitational wave detectors. In this talk, I will give an overview of IMBHs and reverberation mapping, highlighting the only reverberation-confirmed IMBH, NGC 4395. Then I will introduce our ongoing IMBH-RM project, discuss the significant challenges we face, and share some initial results from our research. 

 
Bio: Dr. Hengxiao Guo completed his PhD at the Shanghai Astronomical Observatory (SHAO) in 2016. Before returning to SHAO as a faculty member in 2022, he held positions as a postdoctoral researcher and visiting scholar at the University of Science and Technology of China, the University of California, Los Angeles, the University of California, Irvine, and the University of Illinois at Urbana-Champaign, from 2015 to 2022. His research interests focus on AGN time-domain science, including AGN variability, intermediate-mass black holes, reverberation mapping, supermassive black hole binaries, changing-look AGNs, and tidal disruption events. 

Time: 14:00-15:00PM, 24/April, Wednesday 

Venue: Room 508 (large seminar room), Department of Astronomy 

You can also access the colloquium via :

https://www.koushare.com/homepage/329883