发光闪烁黑洞X射线双星的光变曲线
Optical Light Curves of Luminous Eclipsing Black Hole X-ray Binaries
摘要：
我们研究了光食黑洞X射线双星的光学V波段光变曲线，使用超临界吸积/流出模型，这是更现实的比以前使用的。为了计算双星系统的理论光变曲线，我们不仅采用了盘的整体解析解，而且考虑了光学厚外流的影响。我们发现，当考虑外流的影响时，盘对伴星的蚀食深度变化很大。由于出流效应，我们可以再现SS 433中典型二元参数的光学光变曲线。在外流速度v~3000 km/s的情况下，我们的模型可以拟合SS 433的V波段平均光变曲线的整体形状，但我们发现了一个可能的参数范围，例如\dot{M} ~5000-10000 L_E/c^2（L_E为爱丁顿光度，$c$为光速），T_C为10000 -14000 K。此外，我们简要地讨论了观测的影响，超铝X射线源。
英文摘要：
We examine optical V-band light curves in luminous eclipsing black hole X-ray binaries, using a supercritical accretion/outflow model that is more realistic than the formerly used ones. In order to compute the theoretical light curve in the binary system, we do not only apply the global analytic solution of the disk, but also include the effect of the optically thick outflow. We found that the depth of eclipse of the companion star by the disk changes dramatically when including the effect of the outflow. Due to the effect of outflow, we can reproduce the optical light curve for typical binary parameters in SS433. Our model with outflow velocity v~3000 km/s can fit whole shape of the averaged V-band light curve in SS433, but we found a possible parameter range consistent with observations, such as \dot{M}~5000-10000 L_E/c^2 (with L_E being the Eddington luminosity and $c$ being the speed of light) and T_C~10000K-14000 K for the accretion rate and donor star temperature, respectively. Furthermore, we briefly discuss observational implications for ultraluminous X-ray sources.
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