Lunch talk on Apr. 27, 2020

A Chandra Survey of Milky Way Globular Clusters  

Speaker: Zhongqun Cheng (Wuhan University)

Venue: Video conference

Time: 12:30 PM, Monday, April 27, 2020

Abstract: 

The “binary-burning” processes are thought to play an important role in the evolution of Globular Clusters (GCs), as they may serve as an internal energy source in GCs. Theoretically, many products can be created through the “binary-burning” processes in GCs, including coronally active binaries, blue straggler stars, cataclysmic variables, low-mass X-ray binaries, millisecond pulsars, binary compact objects and intermediate-mass black holes. In this talk I will report our recent X-ray survey results of Galactic GCs with archival Chandra data accumulated in the past 20 years. Using the X-ray sources as sensitive probes of cluster stellar dynamical interactions, we study the abundance and radial distribution of X-ray sources in GCs, and discuss their relations to cluster dynamical evolution processes, such as “binary-burning” processes and mass segregation effect.

Report PPT:  SWIFAR_Zhongqun Cheng.pdf