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Timing and spectral properties of Black hole X-ray binary

  • 2019年秋季

Title: Timing and spectral properties of Black hole X-ray binary

Speaker: 游贝 研究员,武汉大学

Host: 顾为民

Time: 14:30-16:30, Thursday, Nov 28, 2019

Location: Physics Building 552

Abstract: Black hole X-ray binary (BHXRB) sspends its lifetime in the quiescent state with the dim radiation. However, it can be suddenly very bright in X-ray band when being triggered to be in the outburst, due to the instability in the accretion flow. In this talk, I will firstly, from the observational perspective, review the timing (e.g., quasi-periodic-oscillation [QPO] and time-lag) and spectral state transients, during the outburst. Then, from the theoretical perspective, I will discuss the physical mechanism behind the observed timing/spectral properties, mainly focusing on: (1) the role of Lense-Thirring precession in the observed QPO; (2) the role of disk-wind in the spectral evolution. These studies will help us better understand the overall evolution of the accretion process in the outburst of BHXRB, in terms of geometry and dynamic.




厦门大学天文学系
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