论文标题
I型X射线突发与薄积盘的相互作用
Interactions of Type I X-ray Bursts with Thin Accretion Discs
论文作者
论文摘要
我们执行了一组数值实验，研究了I型X射线爆发与薄的Shakura-Sunyaev型积聚盘的相互作用。在这种爆发过程中，仔细观察X射线光谱暗示了圆盘内部区域发生的变化。现在，我们清楚地证明了同时发生的许多关键效应，包括：沿盘表面弱，辐射驱动的流出的证据；大量的Poynting-Robertson（PR）阻力，导致增强剂；圆盘中突出的加热，这会增加高度，同时降低密度和光学深度。 PR阻力导致圆盘的内边缘从中子恒星表面向更大的半径撤退，然后在爆裂的时间尺度上恢复。我们得出的结论是，X射线爆发与周围圆盘的丰富相互作用提供了一种研究积聚物理物理学上紧凑物体的新方法。
We perform a set of numerical experiments studying the interaction of Type I X-ray bursts with thin, Shakura-Sunyaev type accretion discs. Careful observations of X-ray spectra during such bursts have hinted at changes occurring in the inner regions of the disc. We now clearly demonstrate a number of key effects that take place simultaneously, including: evidence for weak, radiation-driven outflows along the surface of the disc; significant levels of Poynting-Robertson (PR) drag, leading to enhanced accretion; and prominent heating in the disc, which increases the height, while lowering the density and optical depth. The PR drag causes the inner edge of the disc to retreat from the neutron star surface toward larger radii and then recover on the timescale of the burst. We conclude that the rich interaction of an X-ray burst with the surrounding disc provides a novel way to study the physics of accretion onto compact objects.
