J1128+592: a highly variable IDV source
文献类型：期刊论文
| 作者 | Gabanyi, K. E.1,2; Marchili, N.3; Krichbaum, T. P.3; Britzen, S.3; Fuhrmann, L.3; Witzel, A.3; Zensus, J. A.3; Mueller, P.3; Liu, X.4 ; Song, H. G.4
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| 刊名 | ASTRONOMISCHE NACHRICHTEN
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| 出版日期 | 2007-08-01 |
| 卷号 | 328期号:8页码:863-866 |
| 关键词 | ISM : clouds quasars : individual (J1128+592) scattering |
| 通讯作者 | Gabanyi, K. E. |
| 英文摘要 | Short time-scale radio variations of compact extragalactic radio quasars and blazars known as IntraDay Variability (IDV) can be explained in at least some sources as a propagation effect; the variations are interpreted as scintillation of radio waves in the turbulent interstellar medium of the Milky Way. One of the most convincing observational arguments in favor of a propagation-induced variability scenario is the observed annual modulation in the characteristic time scale of the variation due to the Earth's orbital motion. So far there are only two sources known with a well-constrained seasonal cycle. Annual modulation has been proposed for a few other less well-documented objects. However, for some other IDV sources source-intrinsic structural variations which cause drastic changes in the variability time scale were also suggested. J1128+592 is a recently discovered, highly variable IDV source. Previous, densely time-sampled flux-density measurements with the Effelsberg 100-m radio telescope (Germany) and the Urumqi 25-m radio telescope (China), strongly indicate an annual modulation of the time scale. The most recent 4 observations in 2006/7, however, do not fit well to the annual modulation model proposed before. In this paper, we investigate a possible explanation of this discrepancy. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | EXTRAGALACTIC RADIO-SOURCES ; COMPTON CATASTROPHE SCENARIO ; INTRADAY VARIABILITY ; ANNUAL MODULATION ; INTERSTELLAR SCINTILLATION ; RAPID VARIABILITY ; ANNUAL CYCLES ; CALIBRATORS ; SCATTERING ; TELESCOPE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000250311400034 |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/818]  |
| 专题 | 星系宇宙学研究团组 射电天文研究室_利用南山26米射电望远镜观测数据的文章 |
| 作者单位 | 1.Hungarian Acad Sci, Res Grp Phys Geodesy & Geodynam, Budapest, Hungary 2.FOMI, Satellite Geodet Observ, Budapest, Hungary 3.Max Planck Inst Radioastron, Bonn, Germany 4.Chinese Acad Sci, Natl Astron Observ, Urumqi Observ, Urumqi 830011, Peoples R China 5.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gabanyi, K. E.,Marchili, N.,Krichbaum, T. P.,et al. J1128+592: a highly variable IDV source[J]. ASTRONOMISCHE NACHRICHTEN,2007,328(8):863-866. |
| APA | Gabanyi, K. E..,Marchili, N..,Krichbaum, T. P..,Britzen, S..,Fuhrmann, L..,...&Sun, X. H..(2007).J1128+592: a highly variable IDV source.ASTRONOMISCHE NACHRICHTEN,328(8),863-866. |
| MLA | Gabanyi, K. E.,et al."J1128+592: a highly variable IDV source".ASTRONOMISCHE NACHRICHTEN 328.8(2007):863-866. |
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来源：新疆天文台
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