标题： XMM-Newton对AGN铁线轮廓的观测 显示英文标题

标题： XMM-Newton Observations of AGN Iron Line Profiles

摘要： XMM-Newton对I型AGN的观测结果进行了展示。 铁K发射线的特性被回顾，XMM-Newton观测到的大多数AGN在6.4 keV处显示窄的、未被XMM分辨（由XMM）的铁线，这些线来自冷物质，必须起源于内吸积盘之外，可能在假想的环或外宽线区。 这条窄线的强度似乎随着光度的增加而减弱，意味着在更明亮的类星体中，这种物质的覆盖分数减少。 XMM-Newton发现的宽的、相对论性的铁线轮廓的例子很少，尽管在MCG -6-30-15中，宽线成分的极端宽度可能暗示中心黑洞的克尔度规。 一般来说，在其他若干塞弗特1型X射线光谱中不需要相对论性的Fe K线轮廓。 显示英文摘要

摘要： XMM-Newton observations of type I AGN are presented. The properties of the iron K emission line are reviewed, the majority of AGN observed by XMM-Newton show narrow, unresolved (by XMM) iron lines at 6.4 keV from cold matter that must originate far from the inner accretion disc, perhaps in the putative torus or outer broad line region. The strength of this narrow line appears to decrease with luminosity, implying a reduction in the covering fraction of this material in the more luminous quasars. Few examples of the broad, relativistic iron line profile have been found by XMM-Newton, although in MCG -6-30-15, the extreme breadth of the broad line component may imply a Kerr metric for the central black hole. Generally, relativistic Fe K line profiles are not required in a number of other Seyfert 1 X-ray spectra.