| Polar outflows in six broad absorption line quasars | |
Zhou, HY1; Wang, TG1; Wang, HY1; Wang, JX1 ; Yuan WM(袁为民)2; Lu, Y1; Zhou, HY (reprint author), Univ Sci & Technol China, Ctr Astrophys, Hefei 230026, Anhui, Peoples R China.
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| 发表期刊 | ASTROPHYSICAL JOURNAL
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| 2006-03-10 | |
| 卷号 | 639期号:2页码:716-723 |
| DOI | 10.1086/499768 |
| 产权排序 | 第2完成单位 |
| 收录类别 | SCI |
| 关键词 | Quasars : Absorption Lines Quasars : General Radio Continuum : Galaxies |
| 摘要 | Using radio observations by FIRST and NVSS, we build a sample of 151 radio-variable quasars selected from the Sloan Digital Sky Survey Data Release 3 (SDSS DR3). Six (and probably another two) of these objects are classified as broad absorption line (BAL) quasars and show radio flux variations of a few tens of percent within 1.5-5 yr. Such large amplitudes of variations imply brightness temperatures much higher than the inverse Compton limits (10(12) K) in all these BAL quasars, suggesting the presence of relativistic jets beaming toward the observer. The angles between the outflow and the jet are constrained to be less than similar to 20 degrees. Such BAL quasars with polar outflows are beyond the simple unification models of BAL and non-BAL quasars, which hypothesize BAL quasars as otherwise normal quasars seen nearly edge-on. |
| 语种 | 英语 |
| 学科领域 | Astronomy & Astrophysics |
| 文章类型 | Article |
| ISSN | 0004-637X |
| URL | 查看原文 |
| WOS记录号 | WOS:000235837100012 |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 关键词[WOS] | DIGITAL SKY SURVEY ; ACTIVE GALACTIC NUCLEI ; RADIO-SOURCES ; 1ST SURVEY ; BRIGHTNESS TEMPERATURE ; EXTRAGALACTIC SOURCES ; OPTICAL-PROPERTIES ; EMISSION-LINE ; DATA RELEASE ; DISK WINDS |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ynao.ac.cn/handle/114a53/4949 |
| 专题 | 高能天体物理研究组 |
| 通讯作者 | Zhou, HY (reprint author), Univ Sci & Technol China, Ctr Astrophys, Hefei 230026, Anhui, Peoples R China. |
| 作者单位 | 1.Center for Astrophysics, University of Science and Technology of China, Hefei, Anhui 230026, China 2.Yunnan Astronomical Observatory, National Astronomical Observatories, Chinese Academy of Sciences, P.O. Box 110, Kunming, Yunnan 650011, China |
| 推荐引用方式 GB/T 7714 | Zhou, HY,Wang, TG,Wang, HY,et al. Polar outflows in six broad absorption line quasars[J]. ASTROPHYSICAL JOURNAL,2006,639(2):716-723. |
| APA | Zhou, HY.,Wang, TG.,Wang, HY.,Wang, JX.,Yuan WM.,...&Zhou, HY .(2006).Polar outflows in six broad absorption line quasars.ASTROPHYSICAL JOURNAL,639(2),716-723. |
| MLA | Zhou, HY,et al."Polar outflows in six broad absorption line quasars".ASTROPHYSICAL JOURNAL 639.2(2006):716-723. |
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| Polar outflows in si（731KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
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