论文标题
由于颜色校正，磁盘截断和磁盘风而导致的估计积聚磁盘尺寸的校正
Corrections to Estimated Accretion Disk Size due to Color Correction, Disk Truncation and Disk Wind
论文作者
论文摘要
我们考虑使用积分模型在给定频率下估计的磁盘尺寸进行三个校正。它们是由于颜色校正，内部半径上的磁盘截断，大于最内向的圆形轨道，以及我们应用于标准磁盘模型的磁盘风。我们将结果应用于基于微透镜的磁盘大小的估计值。我们发现，这三种效果的结合可以解释磁盘大小的长期问题，而微透镜的大小比使用标准磁盘模型估计的磁盘大小（即没有考虑到上述效果）。特别是，即使在与观察到的频率相对应的温度下，这种校正接近统一，颜色校正随着温度的升高会导致半光半径的强烈增加。我们提出的用于计算半光半径的形式主义也解决了基于积聚率和观察到的通量之间的磁盘大小估计之间的差异问题。
We consider three corrections to the disk sizes estimated at a given frequency using accretion models. They are due to a color correction, a disk truncation at an inner radius larger than the innermost stable circular orbit, and disk winds, which we apply to the standard disk model. We apply our results to the estimates of the disk sizes based on microlensing. We find these three effects combined can explain the long-standing problem of the disk sizes from microlensing being larger than those estimated using the standard disk model (i.e., that without accounting for the above effects). In particular, an increase of the color correction with the increasing temperature can lead to a strong increase of the half-light radius even if this correction is close to unity at the temperature corresponding to an observed frequency. Our proposed formalism for calculating the half-light radius also resolves the long-standing issue of discrepancies between the disk size estimates based on the accretion rate and on the observed flux.
