论文标题
nustar的swift/bat agn视图：$ r $ - $γ$相关性
NuSTAR view of Swift/BAT AGN: The $R$-$Γ$ correlation
论文作者
论文摘要
反射驼峰是活性银河核（AGN）硬X射线光谱中的突出特征。它的确切形状及其与其他数量的相关性提供了有关AGN内部和外部区域的宝贵信息。我们的主要目标是研究附近AGN样本样本中的反射驼峰。我们旨在研究吸收及其与光谱指数的相关性的反射演变。我们分析了70个月BAT目录AGN的存档Nustar观察结果。通过进行详细的光谱分析，我们能够限制光谱参数并研究大量单个来源样本中的反射发射。发现反射强度与未吸收来源的幂律斜率密切相关，指向这些来源的盘反射。测试了不同的可能解释，最有可能的解释是，电晕正在以中等相对论的速度向朝向椎间盘移动或远离光盘。对于吸收来源，未检测到$ r-γ$的相关性。另外，这些AGN具有更难的光谱，表明两类之间的固有差异或X射线源的平板几何形状。
The reflection hump is a prominent feature in the hard X-ray spectrum of active galactic nuclei (AGN). Its exact shape and its correlation to other quantities provide valuable information about the inner and outer regions of an AGN. Our main goal is to study the reflection hump in a large sample of nearby AGN. We aim to investigate the evolution of reflection with absorption and its correlation with the spectral index. We analysed archived NuSTAR observations of the 70-month BAT catalogue AGN. By performing a detailed spectral analysis, we were able to constrain the spectral parameters and to investigate the reflection emission in a large sample of individual sources. The reflection strength was found to be strongly correlated with the power-law slope in unabsorbed sources, pointing towards disc reflection for these sources. Different possible explanations were tested and the most likely one is that the corona is moving either towards or away from the disc with a moderately relativistic velocity. An $R-Γ$ correlation was not detected for absorbed sources. In addition, these AGN feature harder spectra, suggesting intrinsic differences between the two classes or a slab geometry for the X-ray source.
