NGC 1365中的可变部分覆盖和相对论铁线
Variable partial covering and a relativistic iron line in NGC 1365
摘要：
我们提出了一个完整的分析的硬X射线（2-10千电子伏）的塞弗特星系NGC 1365的属性，基于2004年1月进行的60 KS XMM-牛顿观测。两个主要结果是：1）我们探测到一个N_H~ 3.5 × 10^23 cm^（-2）的遮蔽云在~25 ks内穿过视线。这意味着X射线源的尺寸不大于10^13厘米，而遮蔽云的距离约为10^16厘米。采用由M（BH）-速度色散关系估算的黑洞质量M（BH），得到源的大小为D_S<20 R_G，遮蔽云的距离和密度为R~3000-10000 R_G，n~10^（10）cm^（-3），即宽线区云的典型值。2)铁发射线与相对论的配置文件检测具有较高的统计意义。线+连续反射分量的时间积分拟合表明，铁的丰度很高（~3倍太阳），这些分量的起源于吸积盘的内部（~10 R_G），与从吸收变率分析推断的小源尺寸一致。
英文摘要：
We present a complete analysis of the hard X-ray (2-10 keV) properties of the Seyfert galaxy NGC 1365, based on a 60 ks XMM-Newton observation performed in January 2004. The two main results are: 1) We detect an obscuring cloud with N_H~3.5x10^23 cm^(-2) crossing the line of sight in ~25 ks. This implies a dimension of the X-ray source not larger than a few 10^13 cm and a distance of the obscuring cloud of the order of 10^16 cm. Adopting the black hole mass M(BH) estimated from the M(BH)-velocity dispersion relation, the source size is D_S<20 R_G and the distance and density of the obscuring clouds are R~3000-10000 R_G and n~10^(10) cm^(-3), i.e. typical values for broad line region clouds. 2) An iron emission line with a relativistic profile is detected with high statistical significance. A time integrated fit of the line+continuum reflection components suggests a high iron abundance (~3 times solar) and an origin of these components in the inner part (~10 R_G) of the accretion disk, in agreement with the small source size inferred from the analysis of the absorption variability.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
