Kinematic Signatures of Reverberation Mapping of Close Binaries of Supermassive Black Holes in Active Galactic Nuclei
文献类型：期刊论文
| 作者 | Yu, Z; Li, YR ; Songsheng, YY; Wang, JM; Yu Z(虞哲); Li YR(李彦荣); 宋盛雨央; Wang JM(王建民)
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2018 |
| 卷号 | 862期号:2页码:171 |
| ISSN号 | 0004-637X |
| 关键词 | galaxies: active gravitational waves quasars: supermassive black holes |
| DOI | 10.3847/1538-4357/aacdfa |
| 文献子类 | Article |
| 英文摘要 | Close binaries of supermassive black holes (CB-SMBHs) with separations of less than or similar to 0.1 pc as the final stage of galaxy mergers are sources of low-frequency gravitational waves; however, they are still elusive observationally because they are not spatially resolved. Fortunately, reverberation as echoes of broad emission lines to ionizing continuum conveys invaluable information on the dynamics of broad-line regions (BLRs) governed by SMBHs in the central regions of active galactic nuclei (AGNs). In this paper, we demonstrate how to compose the hybrid two-dimensional transfer functions (TFs) of binary BLRs around the CB-SMBHs in AGNs, providing an opportunity for identifying them from reverberation mapping (RM) data. It is found that there are variation-coupling effects in the TFs arising from the coupling of CB-SMBH light curves in the Fourier space. We provide semi-analytical formulations of the TFs for kinematic maps of the gas. For cases with the simplest variation-coupling effects, we make calculations for several BLR models and reveal significant distinctions from those of single active black holes. In principle, the difference is caused by the orbital motion of the CB-SMBH systems. In order to search for CB-SMBHs in time-domain space, selection of target candidates should focus on local AGNs with H beta double-peaked profiles and weaker near-infrared emission. High-fidelity RM campaigns of monitoring the targets in future will provide opportunities to reveal these kinematic signatures of the CB-SMBHs and hence measurements of their orbital parameters. |
| 电子版国际标准刊号 | 1538-4357 |
| WOS关键词 | BROAD-LINE REGION ; IONIZING CONTINUUM VARIATIONS ; VELOCITY-DELAY MAPS ; EMISSION-LINES ; SEYFERT-GALAXIES ; ACCRETION DISKS ; CENTRAL CAVITY ; X-RAY ; QUASARS ; MERGERS |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000440726900009 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/286186]  |
| 专题 | 高能物理研究所_粒子天体物理中心 |
| 通讯作者 | Wang JM(王建民) |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Yu, Z,Li, YR,Songsheng, YY,et al. Kinematic Signatures of Reverberation Mapping of Close Binaries of Supermassive Black Holes in Active Galactic Nuclei[J]. ASTROPHYSICAL JOURNAL,2018,862(2):171. |
| APA | Yu, Z.,Li, YR.,Songsheng, YY.,Wang, JM.,虞哲.,...&王建民.(2018).Kinematic Signatures of Reverberation Mapping of Close Binaries of Supermassive Black Holes in Active Galactic Nuclei.ASTROPHYSICAL JOURNAL,862(2),171. |
| MLA | Yu, Z,et al."Kinematic Signatures of Reverberation Mapping of Close Binaries of Supermassive Black Holes in Active Galactic Nuclei".ASTROPHYSICAL JOURNAL 862.2(2018):171. |
入库方式： OAI收割
来源：高能物理研究所
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