Possible evidence of a supermassive black hole binary with two radio jets in blazar 3C279
文献类型：期刊论文
| 作者 | Qian, S. J.1,2; Britzen, S.1; Krichbaum, T. P.1; Witzel, A.1 |
| 刊名 | ASTRONOMY & ASTROPHYSICS
 |
| 出版日期 | 2018-12-19 |
| 卷号 | 621页码:31 |
| ISSN号 | 1432-0746 |
| 关键词 | galaxies: active galaxies: nuclei quasars: individual: 3C279 |
| DOI | 10.1051/0004-6361/201833508 |
| 英文摘要 | Context. Studies of periodic and quasi-periodic phenomena in optical and radio bands are important for understanding the physical processes in quasars. Investigation of periodic/quasi-periodic behavior of the relativistic jets in blazars is particularly significant because it can provide unique information about the formation, collimation, and acceleration of the jets and the properties of the central engines (black hole/accretion disk systems) in blazars. Aims. We investigate the parsec-scale kinematics of the 31 superluminal components observed in blazar 3C279 and attempt to search for evidence of its jet precession and double-jet Methods. The previously suggested precessing jet nozzle model is applied to model-fit the kinematics of its superluminal components observed during the 1981-2015 period. It is shown that the parsec-scale kinematics of the entire source can be interpreted in terms of a double-jet scenario. Results. The superluminal components observed in 3C279 can be divided into two groups that are ejected from two relativistic jets. The two jets have different orientations in space and jet-cone shapes, but both jets precess with the same precession period of 25 yr (16.3 yr in the source frame). The kinematic features of all the superluminal knots (trajectory, core separation, and apparent velocity) can be consistently explained. Their innermost trajectories follow the respective precessing common parabolic patterns with trajectory curvatures that occurred in the outer jet regions at different core separations. The bulk Lorentz factor, Doppler factor, and viewing angle of their motion are derived. The unusual jet-direction change of similar to 100 degrees observed in 2010-2011 can be naturally explained. Conclusions. We propose a double-jet structure scenario for 3C279 and suggest that there may be a supermassive black hole binary in the center of 3C279 ejecting two precessing relativistic jets, resulting in its very complex structure and kinematics on parsec scales, and with extremely variable emission across the electromagnetic spectrum. Because the two jets have the same precession period, the precession of the double jet may have originated from the modulation of their jet orientation by the change in their orbital velocity direction relative to the observer. In this case the mass ratio m/M of the binary is approximately equal to the ratio of the jet cone widths, being on the order of similar to 0.5. |
| WOS关键词 | ACTIVE GALACTIC NUCLEI ; LINKING ACCRETION FLOW ; GAMMA-RAY ; SUPERLUMINAL COMPONENTS ; MILLIARCSECOND STRUCTURE ; PARTICLE-ACCELERATION ; RELATIVISTIC JET ; PRECESSING JET ; QUASAR 3C-279 ; 3C 279 |
| 资助项目 | NASA through the Fermi Guest investigator Program |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | EDP SCIENCES S A |
| WOS记录号 | WOS:000454397500001 |
| 资助机构 | NASA through the Fermi Guest investigator Program ; NASA through the Fermi Guest investigator Program ; NASA through the Fermi Guest investigator Program ; NASA through the Fermi Guest investigator Program ; NASA through the Fermi Guest investigator Program ; NASA through the Fermi Guest investigator Program ; NASA through the Fermi Guest investigator Program ; NASA through the Fermi Guest investigator Program |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/24255]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Qian, S. J. |
| 作者单位 | 1.Max Planck Inst Radioastron, Hugel 69, D-53121 Bonn, Germany 2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Qian, S. J.,Britzen, S.,Krichbaum, T. P.,et al. Possible evidence of a supermassive black hole binary with two radio jets in blazar 3C279[J]. ASTRONOMY & ASTROPHYSICS,2018,621:31. |
| APA | Qian, S. J.,Britzen, S.,Krichbaum, T. P.,&Witzel, A..(2018).Possible evidence of a supermassive black hole binary with two radio jets in blazar 3C279.ASTRONOMY & ASTROPHYSICS,621,31. |
| MLA | Qian, S. J.,et al."Possible evidence of a supermassive black hole binary with two radio jets in blazar 3C279".ASTRONOMY & ASTROPHYSICS 621(2018):31. |
入库方式： OAI收割
来源：国家天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。