论文标题
积聚磁盘内部半径的两个主要限制
Two major constraints on the inner radii of accretion disks
论文作者
论文摘要
Stefan-Boltzmann法律对黑洞X射线二进制文件内部积聚磁盘的几何形状产生了基本限制。它是考虑到磁盘的内部部分的辐照通量和有效温度，这意味着在有效温度下，必须存在的平均能量高于黑体的强大能量高于黑体，只要相对论fe k荧光荧光和反思特征。在高亮度硬状态下的色温$ \ sim $ 1 keV的明显缺失与强烈辐照的磁盘不兼容，该磁盘延伸到最内向的稳定圆形轨道。取而代之的是，磁盘应在相对较大的半径上截断，或在较大的高度上被电晕照射，这将降低有效温度并将其与数据达成协议。我们还研究了使用可变密度反射代码与我们从电离参数，亮度和磁盘内部半径进行比较文献中拟合的磁盘密度之后，研究了对磁盘/电晕模型的约束。我们发现，在二进制文件的硬/软状态下，拟合的密度要高得多/较低，这意味着使用的假设和方法存在重大问题。
The Stefan-Boltzmann law yields a fundamental constraint on the geometry of inner accretion disks in black-hole X-ray binaries. It follows from considering the irradiating flux and the effective temperature of the inner parts of the disk, which implies that a strong quasi-thermal component with the average energy higher than that of a blackbody at the effective temperature has to be present whenever relativistic Fe K fluorescence and reflection features are observed. The apparent absence of such quasi-thermal component with the color temperature of $\sim$1 keV in high-luminosity hard states is not compatible with a strongly irradiated disk extending close to the innermost stable circular orbit. Instead, the disk should be either truncated at a relatively large radius or irradiated by a corona at a large height, which would reduce the effective temperature and bring it to an agreement with the data. We also study constraints on disk/corona models following from comparing the disk densities fitted in literature using variable-density reflection codes with those calculated by us from the ionization parameter, the luminosity and the disk inner radius. We find that the fitted densities are much higher/lower in the hard/soft state of binaries, implying significant problems with the used assumptions and methods.
