IDV observations & study of the quasar 0917+624
文献类型：期刊论文
| 作者 | Liu, Xiang1,2; Li, Quanwei1,3; Krichbaum, Thomas P.4; Aller, Margo F.5; Aller, Hugh D.5 |
| 刊名 | ASTROPHYSICS AND SPACE SCIENCE
 |
| 出版日期 | 2013-07-01 |
| 卷号 | 346期号:1页码:15-17 |
| 关键词 | Quasars: individual: 0917+624 Radio continuum: galaxies Galaxies: jets ISM: structure Scattering |
| ISSN号 | 0004-640X |
| 通讯作者 | Liu,X |
| 英文摘要 | We carried out intra-day variability (IDV) observations from August 2005 to January 2010 with the Urumqi 25 m radio telescope for a dozen IDV sources including the quasar 0917+624. This target exhibited pronounced centimeter-band, intra-day variability during the 1980s-1990s, but its strong IDV phase ceased in 2000. The source showed no IDV in the majority of the Urumqi observing sessions, although weak IDV activity was detected in some. Multifrequency UMRAO data for 0917+624 show that the spectral index is steeper during the weak and non-IDV phases than during the strong IDV phase, supporting the idea that the size of the scintillating component may be enlarged in the weak/non IDV phases. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | EXTRAGALACTIC RADIO-SOURCES ; SCINTILLATION-INDUCED VARIABILITY ; INTRADAY VARIABILITY ; INTERSTELLAR SCINTILLATION ; ANNUAL MODULATION ; COMPACT |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000320042700003 |
| 公开日期 | 2014-05-22 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/10111]  |
| 专题 | 紫金山天文台_期刊（老文献） |
| 作者单位 | 1.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China 2.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Jiangsu, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Max Planck Inst Radioastron, D-53121 Bonn, Germany 5.Univ Michigan, Dept Astron, Ann Arbor, MI 48109 USA |
| 推荐引用方式 GB/T 7714 | Liu, Xiang,Li, Quanwei,Krichbaum, Thomas P.,et al. IDV observations & study of the quasar 0917+624[J]. ASTROPHYSICS AND SPACE SCIENCE,2013,346(1):15-17. |
| APA | Liu, Xiang,Li, Quanwei,Krichbaum, Thomas P.,Aller, Margo F.,&Aller, Hugh D..(2013).IDV observations & study of the quasar 0917+624.ASTROPHYSICS AND SPACE SCIENCE,346(1),15-17. |
| MLA | Liu, Xiang,et al."IDV observations & study of the quasar 0917+624".ASTROPHYSICS AND SPACE SCIENCE 346.1(2013):15-17. |
入库方式： OAI收割
来源：紫金山天文台
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。