The compact structure of radio-loud broad absorption line quasars
文献类型：期刊论文
| 作者 | Liu, Y.1,2,3; Jiang, D. R.1,2,3; Wang, T. G.2,3,4; Xie, F. G.1,2,3,5 |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2008-11-21 |
| 卷号 | 391期号:1页码:246-253 |
| 关键词 | galaxies: active galaxies: jets quasars: absorption lines quasars: general |
| 英文摘要 | We present the results of EVN+MERLIN very long baseline interferometry (VLBI) polarization observations of eight broad absorption line (BAL) quasars at 1.6 GHz, including four low-ionization BAL quasars (LoBALs) and four high-ionization BAL quasars (HiBALs) with either steep or flat spectra on Very Large Array (VLA) scales. Only one steep-spectrum source, J1122+3124, shows two-sided structure on the scale of 2 kpc. The other four steep-spectrum sources and three flat-spectrum sources display either an unresolved image or a core-jet structure on scales of less than 300 pc. In all cases, the marginally resolved core is the dominant radio component. Linear polarization in the cores has been detected in the range of a few to 10 per cent. Polarization, together with high brightness temperatures (from 2 x 10(9) to 5 x 10(10) K), suggests a synchrotron origin for the radio emission. There is no apparent difference in the radio morphologies or polarization between low-ionization and high-ionization BAL quasi-stellar objects (QSOs) or between flat- and steep-spectrum sources. We discuss the orientation of BAL QSOs with both flat and steep spectra, and consider a possible evolutionary scenario for BAL QSOs. In this scenario, BAL QSOs are probably a young population of radio sources that are compact steep spectrum or GHz peaked radio source analogues at the low end of radio power. |
| 学科主题 | 星系与宇宙学研究中心 |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | ACTIVE GALACTIC NUCLEI ; DIGITAL SKY SURVEY ; EARLY DATA RELEASE ; BLACK-HOLE MASS ; STELLAR OBJECTS ; SPECTRUM ; QSO ; POLARIZATION ; LUMINOSITY ; REDSHIFT |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000262299900021 |
| 公开日期 | 2010-11-08 |
| 源URL | [http://119.78.226.72//handle/331011/12463]  |
| 专题 | 上海天文台_星系宇宙学重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China 2.SHAO, Joint Inst Galaxy & Cosmol JOINGC, Shanghai 200030, Peoples R China 3.USTC, Shanghai 200030, Peoples R China 4.Univ Sci & Technol China, Ctr Astrophys, Hefei 230026, Anhui, Peoples R China 5.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Y.,Jiang, D. R.,Wang, T. G.,et al. The compact structure of radio-loud broad absorption line quasars[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2008,391(1):246-253. |
| APA | Liu, Y.,Jiang, D. R.,Wang, T. G.,&Xie, F. G..(2008).The compact structure of radio-loud broad absorption line quasars.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,391(1),246-253. |
| MLA | Liu, Y.,et al."The compact structure of radio-loud broad absorption line quasars".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 391.1(2008):246-253. |
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来源：上海天文台
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