The intrinsic line width of the Fe K alpha line of AGN
文献类型：期刊论文
| 作者 | Liu, Jiren
|
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2016-11-21 |
| 卷号 | 463期号:1页码:L108-L111 |
| 关键词 | atomic processes galaxies: individual: Circinus Mrk 3 NGC 1068 NGC 3783 NGC 4151 NGC 4388 NGC 4507 galaxies: Seyfert X-rays: galaxies |
| 英文摘要 | X-ray fluorescent lines are unique features of the reflection spectrum of the cold torus when irradiated by the central AGN. Their intrinsic line widths can be used to probe the line-emitting region. The line widths of the Fe K alpha line measured from the first-order Chandra High Energy Grating (HEG) spectra are 3-5 times larger than those measured with the Si K alpha line for Circinus, Mrk 3, and NGC 1068. Because the observed Si K alpha and Fe K alpha lines are not necessarily coming from the same physical region, it is uncertain whether the line widths of the Fe K alpha line are overestimated or not. We measured the intrinsic line widths of the Fe K alpha line of several nearby bright AGN using the second- and third-order Chandra HEG spectra, whose spectral resolutions are better than the first-order data. We found the measured widths are all smaller than those from the first-order data. The results clearly show that the widths of the Fe K alpha line measured from the first-order HEG data are overestimated. It indicates that the Fe K alpha lines of the studied sources are originating from regions around the cold dusty torus. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | ACTIVE GALACTIC NUCLEI ; SEYFERT-GALAXIES ; CHANDRA |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000386157100023 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/6831]  |
| 专题 | 国家天文台_星系宇宙学研究部 |
| 作者单位 | Natl Astron Observ, 20A Datun Rd, Beijing 100012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Jiren. The intrinsic line width of the Fe K alpha line of AGN[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2016,463(1):L108-L111. |
| APA | Liu, Jiren.(2016).The intrinsic line width of the Fe K alpha line of AGN.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,463(1),L108-L111. |
| MLA | Liu, Jiren."The intrinsic line width of the Fe K alpha line of AGN".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 463.1(2016):L108-L111. |
入库方式： OAI收割
来源：国家天文台
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