时间：12月14日下午14：00

　　地点：化学楼C305

　　报告人:易疏序 博士

　　主持人：张双南 研究员

　　题目：Some theoretical work on gamma-ray pulsar, double pulsars and BH binaries

　　摘要：

　　The gamma-ray pulsar binary system PSR B1259-63 flares in GeV after each periastron, the origin of which is still under debate. Recently, we proposed a mechanism that might explain the GeV flares. In that model, a transient accretion disc is expected to be formed by the matter which was gravity-captured by the neutron star from the main sequence companion's circumstellar disc. This model can also be used to explain the GeV light curve of HESS J0632+057. As a prediction of this model, we studied phenomenologically the timing behavior of PSR B1259-63 under the influence of the propeller torque from the proposed transient accretion disc. I’ll also report other researches done during the last year.

　　个人简介：

　　Dr. Yi Shu-Xu is currently working at the University of Hong Kong as a postdoctoral fellow. He obtained his Ph.D degree from centre of Key Laboratory of Particle Astrophysics, IHEP, CAS in 2016. He will report his work in the past year, mainly on theoretical modeling of gamma-ray pulsar binaries and double pulsars.