SHAO Astrophysics Colloquium

Title: Ultraluminous X-ray Sources

Speaker: Prof. Hua Feng (Tsinghua University)

Time: 3 pm, January 11 (Thursday)

Location: Lecture Hall, 3rd floor

Abstract: Ultraluminous X-ray sources (ULXs) are non-nuclear accreting compact objects found in external galaxies. They appear to exceed the Eddington limit of canonical black hole binaries under the assumption of isotropic emission. Plausible evidence for intermediate mass black holes was found, but the majority of them are believed to be supercritical accreting systems. I will give an overview of ULXs and discuss their physical natures.

Group meetings

Black hole Accretion and High-energy Astrophysics /Black Hole Feedback and Cosmic Ray Astrophysics Seminar

Location: 1608

Time: 14:00-16:00, Wednesday (Jan. 10th)

Speaker: Defu Bu

Title: Thermal winds in stellar mass black hole and neutron star binary systems

http://adsabs.harvard.edu/abs/2018MNRAS.473..838D

Speaker: Weixiao Wang

Title: Discovery of an Ultraviolet Counterpart to an Ultra-Fast X-ray Outflow in the Quasar PG1211+143

http://adsabs.harvard.edu/abs/2017arXiv171208850K