Diagnosing the kinematics of the tori in active galactic nuclei with the velocity-resolved reverberation mapping of the narrow iron kα line
文献类型：期刊论文
| 作者 | Liu,Yuan; Li,Xiaobo |
| 刊名 | The astrophysical journal letters
 |
| 出版日期 | 2017-07-19 |
| 卷号 | 844期号:1 |
| ISSN号 | 2041-8205 |
| 关键词 | Galaxies: seyfert Radiative transfer X-rays: galaxies |
| DOI | 10.3847/2041-8213/aa7e7e |
| 英文摘要 | Abstract the properties of the dusty tori in active galactic nuclei (agns) have been investigated in detail, mainly focusing on the geometry and components; however, the kinematics of the torus are still not clear. the narrow iron kα line at 6.4 kev is thought to be produced by the x-ray reflection from the torus. thus, the velocity-resolved reverberation mapping of it is able to constrain the kinematics of the torus. such effort is limited by the spectral resolution of current charged coupled device (ccd) detectors and should be possible with the microcalorimeter on the next generation x-ray satellite. in this paper, we first construct the response functions of the torus under a uniform inflow, a keplerian rotation, and a uniform outflow. then the energy-dependent light curve of the narrow iron kα line is simulated according to the performance of the x-ray integral field unit in athena. finally, the energy-dependent cross-correlation function is calculated to reveal the kinematic signal. according to our results, 100 observations with 5 ks exposure of each are sufficient to distinguish the above three velocity fields. although the real geometry and velocity field of the torus could be more complex than we assumed, the present result proves the feasibility of the velocity-resolved reverberation mapping of the narrow iron kα line. the combination of the dynamics of the torus with those of the broad-line region and the host galaxy is instructive for the understanding of the feeding and feedback process of agns. |
| 语种 | 英语 |
| 出版者 | The American Astronomical Society |
| WOS记录号 | IOP:2041-8205-844-1-AA7E7E |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2175718 |
| 专题 | 高能物理研究所 |
| 作者单位 | Key Laboratory of Particle Astrophysics, Institute of High Energy Physics, Chinese Academy of Sciences, P.O. Box 918-3, Beijing 100049, China liuyuan@ihep.ac.cn, lixb@ihep.ac.cn |
| 推荐引用方式 GB/T 7714 | Liu,Yuan,Li,Xiaobo. Diagnosing the kinematics of the tori in active galactic nuclei with the velocity-resolved reverberation mapping of the narrow iron kα line[J]. The astrophysical journal letters,2017,844(1). |
| APA | Liu,Yuan,&Li,Xiaobo.(2017).Diagnosing the kinematics of the tori in active galactic nuclei with the velocity-resolved reverberation mapping of the narrow iron kα line.The astrophysical journal letters,844(1). |
| MLA | Liu,Yuan,et al."Diagnosing the kinematics of the tori in active galactic nuclei with the velocity-resolved reverberation mapping of the narrow iron kα line".The astrophysical journal letters 844.1(2017). |
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来源：高能物理研究所
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