期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 375, 期 1, 页码 227-239出版社
OXFORD UNIV PRESS
DOI: 10.1111/j.1365-2966.2006.11291.x
关键词
galaxies : active; galaxies : individual; IRAS 13197-1627; galaxies : individual; MCG-03-34-64; X-rays : galaxies
We report results from the XMM-Newton observation of IRAS 13197-1627, a luminous infrared (IR) galaxy with a Seyfert 1.8 nucleus. The hard X-ray spectrum is steep (Gamma similar to 2.5) and is absorbed by Compton-thin (N-H similar to 4 x 10(23) cm(-2)) neutral gas. We detect a Fe K alpha emission line at 6.4 keV, consistent with transmission through the absorber. The most striking result of our spectral analysis is the detection of a dominant X-ray reflection component and broad Fe line from the inner accretion disc. The reflection-dominated hard X-ray spectrum is confirmed by the strong Compton hump seen in a previous BeppoSAX observation and could be the sign that most of the primary X-rays are radiated from a compact corona (or base of the jet) within a few gravitational radii from the black hole. We also detect a relatively strong absorption line at 6.81 keV which, if interpreted as Fe xxv resonant absorption, implies an outflow with velocity similar to 5 x 10(3) km s(-1). In the soft energy band, the high-resolution gratings and the CCD-resolution data show the presence of both photoionized gas and thermal plasma emission, the latter being most likely associated with a recent starburst of 15-20 M-circle dot yr(-1).
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据