A radio structure resolved at the deca-parsec scale in the radio-quiet quasar PDS 456 with an extremely powerful X-ray outflow
文献类型：期刊论文
| 作者 | Yang, Jun1,2; An, Tao2; Zheng, Fang2,3; Baan, Willem A.4,5; Paragi, Zsolt6; Mohan, Prashanth2; Zhang, Zhongli2; Liu, Xiang4 |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2019 |
| 卷号 | 482期号:2页码:1701-1705 |
| 关键词 | galaxies: active quasars: individual: PDS 456 radio continuum: galaxies |
| ISSN号 | 0035-8711 |
| DOI | 10.1093/mnras/sty2798 |
| 英文摘要 | Active galactic nuclei (AGNs) accreting at rates close to the Eddington limit can host radiative] y driven mildly relativistic outflows, Some of these X-ray absorbing but powerful outflows can produce strong shocks, resulting in a significant non-thermal emission, This outflow-driven radio emission might be detectable in the radio-quiet quasar PDS 456, as it has a bolometric luminosity that reaches the Eddington limit and a relativistic wide-aperture X-ray outflow with a kinetic power high enough to quench the star formation in its host galaxy. To investigate this possibility, we performed very-long-baseline interferometric (VI,131) observations of the quasar with the European VLBI Network (EVN) at 5 GHz, The full-resolution EVN image reveals two faint and diffuse radio components with a projected separation of about 20 pc and an average brightness temperature of around two million Kelvin. In relation to the optical submas-accuracy position measured by the Gaia mission, the two components are very likely On opposite sides of an undetected radio core. Thus, the VLBI structure at the deco-pc scale could be either a young jet or a bidirectional radio-emitting outflow, launched in the vicinity of a strongly accreting central engine. Two diffuse components at the hecto-pc scale, likely the relic radio emission from past AGN activity, are tentatively detected on each side in the low-resolution EVN image. |
| 资助项目 | SKA from the Ministry of Science and Technology of China[2018YFA0404600] ; Chinese Academy of Sciences (CAS)[114231KYSB20170003] ; Youth Innovation Promotion Association of CAS ; EVN project[EY024A] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000454578700020 |
| 出版者 | OXFORD UNIV PRESS |
| 源URL | [http://119.78.226.72/handle/331011/32021]  |
| 专题 | 中国科学院上海天文台 |
| 通讯作者 | Yang, Jun; An, Tao |
| 作者单位 | 1.Chalmers Univ Technol, Dept Space Earth & Environm, Onsala Space Observ, SE-43992 Onsala, Sweden 2.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Radio Astron, Shanghai 200030, Peoples R China 3.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Key Lab Radio Astron, Xinjiang Astron Observ, 150 Sci 1 St, Urumqi 830011, Peoples R China 5.Netherlands Inst Radio Astron ASTRON, NL-7991 PD Dwingeloo, Netherlands 6.Joint Inst VLBI ERIC JIVE, Postbus 2, NL-7990 AA Dwingeloo, Netherlands |
| 推荐引用方式 GB/T 7714 | Yang, Jun,An, Tao,Zheng, Fang,et al. A radio structure resolved at the deca-parsec scale in the radio-quiet quasar PDS 456 with an extremely powerful X-ray outflow[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2019,482(2):1701-1705. |
| APA | Yang, Jun.,An, Tao.,Zheng, Fang.,Baan, Willem A..,Paragi, Zsolt.,...&Liu, Xiang.(2019).A radio structure resolved at the deca-parsec scale in the radio-quiet quasar PDS 456 with an extremely powerful X-ray outflow.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,482(2),1701-1705. |
| MLA | Yang, Jun,et al."A radio structure resolved at the deca-parsec scale in the radio-quiet quasar PDS 456 with an extremely powerful X-ray outflow".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 482.2(2019):1701-1705. |
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来源：上海天文台
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