Jet-powered Outflows in Supermassive Black Hole Binary Candidate SDSS J1048+0055
文献类型：期刊论文
| 作者 | Jaiswal,Sumit2; Mohan,Prashanth2; An,Tao2; Frey,Sándor1 |
| 刊名 | The Astrophysical Journal
 |
| 出版日期 | 2019-02-27 |
| 卷号 | 873期号:1 |
| 关键词 | black hole physics galaxies: active galaxies: individual (SDSS J1048+0055) quasars: emission lines radio continuum: galaxies |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/ab0176 |
| 英文摘要 | Abstract The search and study of close pairs of supermassive black holes (SMBHs) is important in the study of galaxy mergers that can possibly trigger active galactic nucleus (AGN) activity, and in the context of their evolution into the gravitational wave emitting regime. The quasar SDSS?J1048+0055 was identified as an SMBH binary (SMBHB) candidate based on the observed double-peaked [O iii]?λλ4959, 5007 emission lines and two distinct radio components separated by ～20?pc (Zhou et al. 2004). To ascertain the binary nature of this source, we analyzed multifrequency, multiepoch very long baseline interferometry (VLBI) data to investigate its parsec-scale radio properties. The source shows double components with the western feature being brighter than the eastern one. This brighter component has a brightness temperature of ～1010 K, a spectral index of α?=??0.09?±?0.09 (flat), and is indicative of mildly relativistic beaming. In contrast, the faint component has a lower brightness temperature of ～108?9 K and a steep spectrum. These clues are consistent with a core–jet structure; moreover, the apparent separation speed between the two components is much higher than the expected orbital motion in a binary SMBH. Thus the present study excludes the association of the two VLBI components with the cores of an SMBHB; though, the SMBHB possibility (e.g., a pair of radio-loud and radio-quiet AGNs) is not fully ruled out. In the single AGN scenario, the double-peaked optical emission lines can originate from the jet interacting with the narrow-line region as indicated by a change in the jet direction at ～140 pc. |
| 语种 | 英语 |
| WOS记录号 | IOP:0004-637X-873-1-AB0176 |
| 出版者 | The American Astronomical Society |
| 源URL | [http://119.78.226.72/handle/331011/31941]  |
| 专题 | 中国科学院上海天文台 |
| 作者单位 | 1.Konkoly Observatory, MTA Research Centre for Astronomy and Earth Sciences, Konkoly Thege Miklós út 15-17, H-1121 Budapest, Hungary 2.Shanghai Astronomical Observatory, Key Laboratory of Radio Astronomy, Chinese Academy of Sciences, 80 Nandan Road Shanghai 200030, People's Republic of China; sumit@shao.ac.cn, antao@shao.ac.cn |
| 推荐引用方式 GB/T 7714 | Jaiswal,Sumit,Mohan,Prashanth,An,Tao,et al. Jet-powered Outflows in Supermassive Black Hole Binary Candidate SDSS J1048+0055[J]. The Astrophysical Journal,2019,873(1). |
| APA | Jaiswal,Sumit,Mohan,Prashanth,An,Tao,&Frey,Sándor.(2019).Jet-powered Outflows in Supermassive Black Hole Binary Candidate SDSS J1048+0055.The Astrophysical Journal,873(1). |
| MLA | Jaiswal,Sumit,et al."Jet-powered Outflows in Supermassive Black Hole Binary Candidate SDSS J1048+0055".The Astrophysical Journal 873.1(2019). |
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