A PROBABLE MILLI-PARSEC SUPERMASSIVE BINARY BLACK HOLE IN THE NEAREST QUASAR MRK 231
文献类型：期刊论文
| 作者 | Yan, Chang-Shuo1 ; Lu, Youjun1; Dai, Xinyu2; Yu, Qingjuan3
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| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2015-08-20 |
| 卷号 | 809期号:2 |
| 关键词 | accretion, accretion disks black hole physics galaxies: active galaxies: individual (Mrk 231) galaxies: nuclei quasars: supermassive black holes |
| 英文摘要 | Supermassive binary black holes (BBHs) are unavoidable products of galaxy mergers and are expected to exist in the cores of many quasars. Great effort has been made during the past several decades to search for BBHs among quasars; however, observational evidence for BBHs remains elusive and ambiguous, which is difficult to reconcile with theoretical expectations. In this paper, we show that the distinct optical-to-UV spectrum of Mrk 231 can be well interpreted as emission from accretion flows onto a BBH, with a semimajor axis of similar to 590 AU and an orbital period of similar to 1.2 years. The flat optical and UV continua are mainly emitted from a circumbinary disk and a minidisk around the secondary black hole (BH), respectively; and the observed sharp drop off and flux deficit at lambda similar to 4000-2500 angstrom is due to a gap (or hole) opened by the secondary BH migrating within the circumbinary disk. If confirmed by future observations, this BBH will provide a unique laboratory to study the interplay between BBHs and accretion flows onto them. Our result also demonstrates a new method to find sub-parsec scale BBHs by searching for deficits in the optical-to-UV continuum among the spectra of quasars. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000361655100010 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/5572]  |
| 专题 | 国家天文台_星系宇宙学研究部 |
| 作者单位 | 1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 2.Univ Oklahoma, Homer L Dodge Dept Phys & Astron, Norman, OK 73019 USA 3.Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yan, Chang-Shuo,Lu, Youjun,Dai, Xinyu,et al. A PROBABLE MILLI-PARSEC SUPERMASSIVE BINARY BLACK HOLE IN THE NEAREST QUASAR MRK 231[J]. ASTROPHYSICAL JOURNAL,2015,809(2). |
| APA | Yan, Chang-Shuo,Lu, Youjun,Dai, Xinyu,&Yu, Qingjuan.(2015).A PROBABLE MILLI-PARSEC SUPERMASSIVE BINARY BLACK HOLE IN THE NEAREST QUASAR MRK 231.ASTROPHYSICAL JOURNAL,809(2). |
| MLA | Yan, Chang-Shuo,et al."A PROBABLE MILLI-PARSEC SUPERMASSIVE BINARY BLACK HOLE IN THE NEAREST QUASAR MRK 231".ASTROPHYSICAL JOURNAL 809.2(2015). |
入库方式： OAI收割
来源：国家天文台
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