Title: Recent progress in understanding ultra-luminous X-ray sources  

Speaker: Jifeng Liu (NAOC)  

Time & Place: Thursday, 3:00pm, November 6th, Lecture Hall, 3rd floor  

Abstract: Ultraluminous X-ray sources, given their high X-ray luminosities, can be the long-sought intermediate mass black holes, or stellar black holes that manages to radiate above Eddington. I will review progresses that are gradually shaping our understanding of their nature.

Biog: Dr. Jifeng Liu graduated from Beijing University, and received his Ph.D. from University of Michigan. He was a postdoc, and later a Chandra fellow and an independent astrophysicist at Harvard-Smithsonian center for astrophysics, and joined National Astronomical Observatories of China in 2010. His research interests include multi-wavelength observations of compact objects and, more recently, stars.