The complex X-ray spectrum of NGC 4507
The complex X-ray spectrum of NGC 4507
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NGC 4507 的复杂 X 射线光谱
DOI：
10.1051/0004-6361:20047045
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发表时间：
2004
影响因子：
6.5
通讯作者：
A. Martocchia
中科院分区：
文献类型：
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作者：
G. Matt;S. Bianchi;F. D’Ammando;A. Martocchia
本文分析和讨论了康普顿薄（NH_4 × 1023 cm −2）Seyfert 2星系NGC 4507的XMM-Newton谱和Chandra/HETG谱.主要结果如下：a）软X射线发射富含发射线;（至少）两个带的光电离区需要解释大范围的电离态; B）6.4 keV的铁线可能是从康普顿厚度的物质中发射的，这意味着存在两个环核冷区，一个康普顿厚度的c）在Chandra/HETG光谱中发现了Fe双光子吸收线的证据。电离吸收体的柱密度估计为几×10 22 cm −2。
XMM-Newton and Chandra/HETG spectra of the Compton-thin (NH ∼ 4 × 10 23 cm −2 ) Seyfert 2 galaxy, NGC 4507, are analyzed and discussed. The main results are: a) the soft X-ray emission is rich in emission lines; an (at least) two-zone photoionization region is required to explain the large range of ionization states; b) the 6.4 keV iron line is likely emitted from Compton-thick matter, implying the presence of two circumnuclear cold regions, one Compton-thick (the emitter), one Compton-thin (the cold absorber); c) evidence of an Fe absorption line is found in the Chandra/HETG spectrum. The column density of the ionized absorber is estimated to be a few ×10 22 cm −2 .
变化的活跃星系核的时间变化的辐射磁流体动力学模拟
DOI：
--
发表时间：
2020
期刊：
影响因子：
--
作者：
Taichi Igarashi;Y. Kato;H.R. Takahashi;K. Ohsuga;R. Matumoto
通讯作者：
R. Matumoto