Institutional Repository of Radio Astronomy Research Laboratory
| Rapid variability of BL Lac 0925+504: interstellar scintillation induced? | |
Liu, Jun1 ; Liu, Xiang1,2
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| 2015-06-01 | |
| Source Publication | ASTROPHYSICS AND SPACE SCIENCE
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| Volume | 357Issue:2Pages:165 |
| Contribution Rank | 1 |
| Abstract | Analysis of rapid variability at 4.85 GHz for the BL Lac object 0925+504 is presented and discussed. The structure functions (SF) are investigated with both refractive and weak interstellar scintillation (RISS/WISS) models analytically. Parameters obtained with these models are quantitatively compared, suggesting that the emission region of IDV is remarkably compact and the responsible interstellar scintillation medium (ISM) lies very close to the observer. Furthermore possible evidence of annual modulation of the variability timescales is detected in this source. Our findings indicate that the observed rapid variability in 0925+504 is predominantly caused by a scattering screen located along the line of sight to the source, at a distance of similar to 110 pc to the observer. |
| Keyword | Galaxies: Active Bl Lacertae Objects: Individual: 0925+504 Ism: Structure Methods: Data Analysis |
| Subtype | Article |
| DOI | 10.1007/s10509-015-2393-5 |
| WOS Headings | Science & Technology ; Physical Sciences |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | EXTRAGALACTIC RADIO-SOURCES ; INTRADAY VARIABILITY ; PULSAR SCINTILLATION ; LACERTAE OBJECTS ; FERMI ; TELESCOPE ; BLAZARS ; SAMPLE ; VLBI ; 1ST |
| WOS Research Area | Astronomy & Astrophysics |
| WOS Subject | Astronomy & Astrophysics |
| WOS ID | WOS:000357338700012 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/870 |
| 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 |
| Affiliation | 1.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Xinjiang, Peoples R China 2.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Jiangsu, Peoples R China |
| First Author Affilication | Xinjiang Astronomical Observatory, Chinese Academy of Sciences |
| Recommended Citation GB/T 7714 | Liu, Jun,Liu, Xiang. Rapid variability of BL Lac 0925+504: interstellar scintillation induced?[J]. ASTROPHYSICS AND SPACE SCIENCE,2015,357(2):165. |
| APA | Liu, Jun,&Liu, Xiang.(2015).Rapid variability of BL Lac 0925+504: interstellar scintillation induced?.ASTROPHYSICS AND SPACE SCIENCE,357(2),165. |
| MLA | Liu, Jun,et al."Rapid variability of BL Lac 0925+504: interstellar scintillation induced?".ASTROPHYSICS AND SPACE SCIENCE 357.2(2015):165. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Rapid variability of（758KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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