Special relativistic effects on the strength of the fluorescent Kα iron line from black hole accretion discs
Special relativistic effects on the strength of the fluorescent Kα iron line from black hole accretion discs
复制标题
特殊相对论对黑洞吸积盘荧光 Kα 铁线强度的影响
DOI：
10.1093/mnras/290.1.l1
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发表时间：
1997
影响因子：
4.8
通讯作者：
A. Fabian
中科院分区：
文献类型：
--
作者：
C. Reynolds;A. Fabian
宽的铁K发射线，通常出现在塞弗特核的X射线谱中，被认为是起源于内吸积盘被活跃的盘冕照亮时。我们表明，磁盘和X射线发射材料之间的相对运动可以有一个重要的影响，通过特殊的相对论性像差和多普勒效应观察到的等效宽度（EW）这条线。我们认为这可能与理解为什么观察到的EW经常超过标准X射线反射模型的预测有关。几个观测测试建议，可以解开这些特殊的相对论效应从铁丰度的影响。
The broad iron Kemission line, commonly seen in the X-ray spectrum of Seyfert nuclei, is thought to originate when the inner accretion disk is illuminated by an active disk-corona. We show that relative motion between the disk and the X-ray emitting material can have an important influence on the observed equivalent width (EW) of this line via special relativistic aberration and Doppler effects. We suggest this may be relevant to understanding why the observed EW often exceeds the prediction of the standard X-ray reflection model. Several observational tests are suggested that could disentangle these special relativistic effects from iron abundance effects.