Speaker
Xin Pan
(Shanghai Astronomical Observatory)
Description
Five QPE (quasi-periodic eruption) sources have been detected in the past few years. But so far, the mechanism of QPE is still unclear. In this talk, I will introduce you to a disk instability model based on \citet{2021ApJ...910...97P} (PLC21) to explain GSN 069 and other QPEs. We improve the work of PLC21 to include a non-zero viscous torque condition at the inner boundary of the disk and adopt a general form of viscous stress torque in the Kerr metric. It was found that our model can qualitatively reproduce both the light curve and the phase-resolved X-ray spectra of these sources.
Primary author
Xin Pan
(Shanghai Astronomical Observatory)
Co-authors
Dr.
Shuang-Liang Li
(Shanghai Astronomical Observatory)
Dr.
Xinwu Cao
(Zhejiang University)
Dr.
Giovanni Miniutti
(Centro de Astrobiología (CAB), CSIC-INTA)
Dr.
Minfeng Gu
(Shanghai Astronomical Observatory)
