报告人：

游贝 研究员

报告人单位：

武汉大学

报告时间：

1月10日上午10:00-12:00

报告地点：

东七楼，四楼427会议室

报告摘要：

One interesting observational appearance in X-ray binaries is the broadband X-ray variability, covering timescales from 0.01 s to thousands of seconds. Fast Fourier analysis of variability reveals Quasi-Periodic Oscillations (QPOs) in some X-ray binaries. However, the physical origin of QPOs is still under debate. As for low-frequency (1∼10 Hz) QPO (LFQPOs),the possible mechanism involves the so-called Lense–Thirring precession, which is due to the frame-dragging effect in the strong gravity field. We developed a Monte Carlo code to compute the Compton-scattered X-ray flux arising from a hot inner flow that undergoes Lense–Thirring precession. In this talk, I will review our modeling results on X-ray variability of LFQPO, and discuss its application on understanding the observed variability.

报告人简介：

2014年博士毕业于上海天文台，主要研究课题：黑洞吸积物理，活动星系核。

2014年10月至2017年10月，波兰哥白尼天文中心，博士后。主要研究课题：黑洞自旋测量以及活动星系核宽波段拟合。

2014年至今，武汉大学，研究员。主要研究课题：黑洞双星以及活动星系核外流，黑洞双星准周期振荡。