Institutional Repository of Radio Astronomy Research Laboratory
| IDV observations & study of the quasar 0917+624 | |
Liu, Xiang1,2 ; Li, Quanwei1,3; Krichbaum, Thomas P.4; Aller, Margo F.5; Aller, Hugh D.5
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| 2013-07-01 | |
| Source Publication | ASTROPHYSICS AND SPACE SCIENCE
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| Volume | 346Issue:1Pages:15-17 |
| Contribution Rank | 1 |
| Abstract | 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. |
| Keyword | Quasars: Individual: 0917+624 Radio Continuum: Galaxies Galaxies: Jets Ism: Structure Scattering |
| Subtype | Article |
| WOS Headings | Science & Technology ; Physical Sciences |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | EXTRAGALACTIC RADIO-SOURCES ; SCINTILLATION-INDUCED VARIABILITY ; INTRADAY VARIABILITY ; INTERSTELLAR SCINTILLATION ; ANNUAL MODULATION ; COMPACT |
| WOS Research Area | Astronomy & Astrophysics |
| WOS Subject | Astronomy & Astrophysics |
| WOS ID | WOS:000320042700003 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/475 |
| Collection | 射电天文研究室_星系宇宙学研究团组 科研仪器设备产出_利用南山26米射电望远镜（NSRT）观测数据的文章 |
| Corresponding Author | Liu, Xiang |
| Affiliation | 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 |
| First Author Affilication | Xinjiang Astronomical Observatory, Chinese Academy of Sciences |
| Corresponding Author Affilication | Xinjiang Astronomical Observatory, Chinese Academy of Sciences |
| Recommended Citation 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. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| IDV observations & s（240KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-ND | View Application Full Text | |
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