Institutional Repository of Radio Astronomy Research Laboratory
| J1128+592: a highly variable IDV source | |
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; Han, J. L.5; Sun, X. H.5
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| 2007-08-01 | |
| Source Publication | ASTRONOMISCHE NACHRICHTEN
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| Volume | 328Issue:8Pages:863-866 |
| Contribution Rank | 4 |
| Abstract | 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. |
| Keyword | Ism : Clouds Quasars : Individual (j1128+592) Scattering |
| Subtype | Article |
| DOI | 10.1002/asna.200710818 |
| WOS Headings | Science & Technology ; Physical Sciences |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | EXTRAGALACTIC RADIO-SOURCES ; COMPTON CATASTROPHE SCENARIO ; INTRADAY VARIABILITY ; ANNUAL MODULATION ; INTERSTELLAR SCINTILLATION ; RAPID VARIABILITY ; ANNUAL CYCLES ; CALIBRATORS ; SCATTERING ; TELESCOPE |
| WOS Research Area | Astronomy & Astrophysics |
| WOS Subject | Astronomy & Astrophysics |
| WOS ID | WOS:000250311400034 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/818 |
| 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 | Gabanyi, K. E. |
| Affiliation | 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 |
| Recommended Citation 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. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Gabányi-2007-J1128+5（216KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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