The Hyperluminous, Dust-obscured Quasar W2246–0526 at z?=?4.6: Detection of Parsec-scale Radio Activity
文献类型：期刊论文
| 作者 | Fan,Lulu1,2,3; Chen,Wen4,5; An,Tao6; Xie,Fu-Guo7; Han,Yunkun4; Knudsen,Kirsten K.8; Yang,Jun8; Chen W(陈文) ; Han YK(韩云坤)
|
| 刊名 | The Astrophysical Journal Letters
 |
| 出版日期 | 2020-12-01 |
| 卷号 | 905期号:2 |
| ISSN号 | 2041-8205 |
| 关键词 | High-redshift galaxies Quasars Radio continuum emission High-luminosity active galactic nuclei |
| DOI | 10.3847/2041-8213/abcebf |
| 通讯作者 | Fan,Lulu() |
| 英文摘要 | Abstract WISE J224607.56?052634.9 (W2246?0526) is a hyperluminous (Lbol?≈?1.7?×?1014 L⊙), dust-obscured, and radio-quiet quasar at redshift z?=?4.6. It plays a key role in probing the transition stage between dusty starbursts and unobscured quasars in the coevolution of galaxies and supermassive black holes (SMBHs). To search for the evidence of the jet activity launched by the SMBH in W2246?0526, we performed very long baseline interferometry observations of its radio counterpart with the European VLBI Network (EVN) plus the enhanced Multi Element Remotely Linked Interferometer Network (e-MERLIN) at 1.66 GHz and the Very Long Baseline Array (VLBA) at 1.44 and 1.66 GHz. The deep EVN plus e-MERLIN observations detect a compact (size ≤?32 pc) sub-mJy component contributing about 10% of its total flux density, which spatially coincides with the peak of dust continuum and [C II] emissions. Together with its relatively high brightness temperature (?≥?8?×?106 K), we interpret the component as a consequence of nonthermal radio activity powered by the central SMBH, which likely originates from a stationary jet base. The resolved-out radio emission possibly come from a diffuse jet, quasar-driven winds, or both, while the contribution by star formation activity is negligible. Moreover, we propose an updated geometry structure of its multiwavelength active nucleus and shed light on the radio quasar selection bias toward the blazars at z?>?4. |
| 语种 | 英语 |
| 出版者 | The American Astronomical Society |
| WOS记录号 | IOP:2041-8205-905-2-ABCEBF |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/24015]  |
| 专题 | 云南天文台_射电天文研究组 |
| 通讯作者 | Fan,Lulu |
| 作者单位 | 1.CAS Key Laboratory for Research in Galaxies and Cosmology, Department of Astronomy, University of Science and Technology of China, Hefei 230026, People’s Republic of China; llfan@ustc.edu.cn 2.School of Astronomy and Space Sciences, University of Science and Technology of China, Hefei, Anhui 230026, People’s Republic of China 3.Shandong Provincial Key Lab of Optical Astronomy and Solar-Terrestrial Environment, Institute of Space Science, Shandong University, Weihai, 264209, People’s Republic of China 4.Yunnan Observatories, Chinese Academy of Sciences, 396 Yangfangwang, Guandu District, Kunming, 650216, People’s Republic of China 5.University of Chinese Academy of Sciences, No.19(A) Yuquan Road, Shijingshan District, Beijing, 100049, People’s Republic of China 6.Key Laboratory of Radio Astronomy, Shanghai Astronomical Observatory, 80 Nandan Road, 200030, Shanghai, People’s Republic of China 7.Key Laboratory for Research in Galaxies and Cosmology, Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai 200030, People’s Republic of China 8.Department of Space, Earth and Environment, Chalmers University of Technology, Onsala Space Observatory, SE-439 92 Onsala, Sweden; jun.yang@chalmers.se |
| 推荐引用方式 GB/T 7714 | Fan,Lulu,Chen,Wen,An,Tao,et al. The Hyperluminous, Dust-obscured Quasar W2246–0526 at z?=?4.6: Detection of Parsec-scale Radio Activity[J]. The Astrophysical Journal Letters,2020,905(2). |
| APA | Fan,Lulu.,Chen,Wen.,An,Tao.,Xie,Fu-Guo.,Han,Yunkun.,...&Han YK.(2020).The Hyperluminous, Dust-obscured Quasar W2246–0526 at z?=?4.6: Detection of Parsec-scale Radio Activity.The Astrophysical Journal Letters,905(2). |
| MLA | Fan,Lulu,et al."The Hyperluminous, Dust-obscured Quasar W2246–0526 at z?=?4.6: Detection of Parsec-scale Radio Activity".The Astrophysical Journal Letters 905.2(2020). |
入库方式： OAI收割
来源：云南天文台
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。