Parsec-scale jet properties of the gamma-ray quasar 3C 286
文献类型：期刊论文
| 作者 | An, T.1,2; Lao, B. -Q.1; Zhao, W.1; Mohan, P.1; Cheng, X. -P.1,3; Cui, Y. -Z.1; Zhang, Z. -L.1 |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2017-04-01 |
| 卷号 | 466期号:1页码:952-959 |
| 关键词 | techniques: interferometric quasars: individual: 3C 286 radio continuum:galaxies |
| ISSN号 | 0035-8711 |
| DOI | 10.1093/mnras/stw2887 |
| 通讯作者 | An, T.(antao@shao.ac.cn) |
| 英文摘要 | The quasar 3C 286 is one of two compact steep-spectrum sources detected by the Fermi/Large Area Telescope. Here, we investigate the radio properties of the parsec(pc)-scale jet and its (possible) association with the gamma-ray emission in 3C 286. The Very Long Baseline Interferometry (VLBI) images at various frequencies reveal a one-sided core-jet structure extending to the south-west at a projected distance of similar to 1 kpc. The component at the jet base showing an inverted spectrum is identified as the core, with a mean brightness temperature of 2.8 x 10(9) K. The jet bends at about 600 pc (in projection) away from the core, from a position angle of -135 degrees to -115 degrees. Based on the available VLBI data, we inferred the proper-motion speed of the inner jet as 0.013 +/- 0.011 mas yr(-1) (beta(app) = 0.6 +/- 0.5), corresponding to a jet speed of about 0.5 c at an inclination angle of 48. between the jet and the line of sight of the observer. The brightness temperature, jet speed and Lorentz factor are much lower than those of gamma-ray-emitting blazars, implying that the pc-scale jet in 3C 286 is mildly relativistic. Unlike blazars in which gamma-ray emission is in general thought to originate from the beamed innermost jet, the location and mechanism of gamma-ray emission in 3C 286 may be different as indicated by the current radio data. Multiband spectrum fitting may offer a complementary diagnostic clue of the gamma-ray production mechanism in this source. |
| WOS关键词 | ACTIVE GALACTIC NUCLEI ; LARGE-AREA TELESCOPE ; STEEP-SPECTRUM SOURCES ; PROBE WMAP OBSERVATIONS ; EXTRAGALACTIC RADIO-SOURCES ; VLBA CALIBRATOR SURVEY ; HIGH-ENERGY EMISSION ; BL LACERTAE OBJECTS ; SOURCE CATALOG ; 5 GHZ |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000398112400065 |
| 出版者 | OXFORD UNIV PRESS |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/23165]  |
| 专题 | 中国科学院紫金山天文台 |
| 通讯作者 | An, T. |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China 2.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Jiangsu, Peoples R China 3.Univ Chinese Acad Sci, 19A Yuquanlu, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | An, T.,Lao, B. -Q.,Zhao, W.,et al. Parsec-scale jet properties of the gamma-ray quasar 3C 286[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2017,466(1):952-959. |
| APA | An, T..,Lao, B. -Q..,Zhao, W..,Mohan, P..,Cheng, X. -P..,...&Zhang, Z. -L..(2017).Parsec-scale jet properties of the gamma-ray quasar 3C 286.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,466(1),952-959. |
| MLA | An, T.,et al."Parsec-scale jet properties of the gamma-ray quasar 3C 286".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 466.1(2017):952-959. |
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来源：紫金山天文台
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