论文标题
GSN 069的准周期喷发的磁盘不稳定性模型
A disk instability model for the quasi-periodic eruptions of GSN 069
论文作者
论文摘要
GSN 069是最近发现的QPE（准周期性喷发），每9小时反复出现。到目前为止，GSN 069的QPE的机制尚不清楚。在这项工作中，构建了磁盘不稳定性模型，以解释基于Pan等人的GSN 069。 （2021）（plc21），作者提出了一个玩具模型，用于重复更换（CL）主动银河核（AGN）。我们通过在磁盘的内部边界上包括非零的粘性扭矩条件并采用KERR公制中粘性应力扭矩的一般形式来改善PLC21的工作。发现0.4-2的keV光曲线，不同能带的光曲线以及GSN 069的相位分辨X射线光谱都可以通过我们的模型定性地重现。此外，QPE中光曲线的轮廓可以通过参数μin粘性扭矩方程式显着改变，这意味着我们的模型也可以应用于其他QPE。
GSN 069 is a recently discovered QPE (Quasi-periodic eruptions) source recurring about every 9 hours. The mechanism for the QPEs of GSN 069 is still unclear so far. In this work, a disk instability model is constructed to explain GSN 069 based on Pan et al. (2021) (PLC21), where the authors proposed a toy model for the repeating changing-look (CL) active galactic nuclei (AGN). We improve the work of PLC21 by including a non-zero viscous torque condition on the inner boundary of disk and adopting a general form for the viscous stress torque in Kerr metric. It is found that the 0.4-2 keV light curves, the light curves at different energy bands and the phase-resolved X-ray spectrum of GSN 069 can all be qualitatively reproduced by our model. Furthermore, the profiles of light curve in QPEs can be significantly changed by the parameter μin viscous torque equation, which implies that our model may also be applied to other QPEs.
