论文标题
z = 0.5--4的Agn X射线光谱中的相对论积聚磁盘反射：四个\ textit {chandra}的研究
Relativistic accretion disk reflection in AGN X-ray spectra at z=0.5--4: a study of four \textit{Chandra} deep fields
论文作者
论文摘要
我们确认这些光谱是通过包含两个康普顿反射组件的模型最好拟合的，一个组件来自遥远的材料，另一个显示相对论扩展，最有可能来自内部积聚磁盘。相对论扩展的程度表明对高黑洞自旋的偏爱，但反射较弱，比被点源照明的平盘预期的偏远。我们研究了康普顿反射特征，这是亮度，红移和遮挡的函数，确认了铁线的狭窄和宽阔组件的X射线鲍德温效应。还可以看到反相关的红移和遮盖的色谱柱密度，但很难从鲍德温效应中解脱出来。我们的方法能够从具有低信噪比的多个光谱中提取信息，并且可以应用于诸如Erosita之类的未来数据集。但是，我们使用仿真显示，必须将适当的信噪比剪切到样品中，以确保光谱添加有用的信息。
We confirm that the spectra are best fit by a model containing two Compton reflection components, one from distant material, and the other displaying relativistic broadening, most likely from the inner accretion disk. The degree of relativistic broadening indicates a preference for high black hole spin, but the reflection is weaker than that expected for a flat disk illuminated by a point source. We investigate the Compton reflection signatures as a function of luminosity, redshift and obscuration, confirming an X-ray Baldwin effect for both the narrow and broad components of the iron line. Anti-correlations are also seen with redshift and obscuring column density, but are difficult to disentangle from the Baldwin effect. Our methodology is able to extract information from multiple spectra with low signal-to-noise ratio, and can be applied to future data sets such as eROSITA. We show using simulations, however, that it is necessary to apply an appropriate signal-to-noise ratio cut to the samples to ensure the spectra add useful information.
