论文标题
$ b $和$ v $ imxb hz的35天超大型周期的建模她/她的X-1
Modeling of 35-day superorbital cycle of $B$ and $V$ light curves of IMXB HZ Her/Her X-1
论文作者
论文摘要
X射线二进制X-1由一个积聚的中子星和光学组件HZ组成。自1972年被Uhuru卫星发现以来，该系统的35天X射线超晶型变异性就一直闻名，并且据信是由于强迫向轨道平面倾斜的翘曲积聚盘的进攻引起的。我们认为，Hz她的35天光学变异性的观察到的特征可以通过中子星的自由进攻，其周期接近强制磁盘的特征。模型参数包括a）中子星的X射线光度； b）来自积聚盘的光通量； c）积聚磁盘的内部和外边缘的倾斜。讨论了基于中子恒星自由进动与非平稳气流动态作用之间的耦合的可能同步机制。
The X-ray binary Her X-1 consists of an accreting neutron star and the optical component HZ Her. The 35-day X-ray superorbital variability of this system is known since its discovery in 1972 by the Uhuru satellite and is believed to be caused by forced precession of a warped accretion disk tilted to the orbital plane. We argue that the observed features of the 35-day optical variability of HZ Her can be explained by free precession of the neutron star with a period close to that of the forced disk. The model parameters include a) the X-ray luminosity of the neutron star; b) the optical flux from the accretion disk; c) the tilt of the inner and outer edges of the accretion disk. A possible synchronization mechanism based on the coupling between the neutron star free precession and the dynamical action of non-stationary gas streams is discussed.
