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| Periodic oscillation in the long-term radio light curves of Quasar 1156+295 | |
Liu, Baorong1,2,3,4 ; Liu, Xiang1
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| 2014-07-01 | |
| Source Publication | ASTROPHYSICS AND SPACE SCIENCE
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| Volume | 352Issue:1Pages:215-220 |
| Contribution Rank | 1 |
| Abstract | Based on the light curves at 4.8, 8.0 and 14.5 GHz of Quasar 1156+295 from the University of Michigan Radio Astronomy Observatory, we analyze the variability property of total flux at the three radio bands during the time range from 1980 to 2012. With the structure function (SF) analysis we find a similar evolution trend with the characteristic variability timescale of 1.15 +/- 0.05 year for all the three radio bands, and a possible quasi-periodic variability period of similar to 2.3 +/- 0.1 year. The Lomb-Scargle periodogram (LSP) analysis implies the existence of multiple periods in the radio light curves, one of them with a period similar to the one found using the SF at around 2.3 year. The structure function analysis of pre- and post-1997 suggests that the characteristic timescales become longer since 1997, confirmed by the result of Lomb-Scargle periodogram and auto-correlation function. In addition, the cross correlation analysis confirms that there is a strong correlation of flux variations at the three radio frequencies with the 14.5 GHz variation leading the other two bands by about 60-120 days. |
| Keyword | Quasar: Individual: 1156+295 Long-term Variability |
| Subtype | Article |
| DOI | 10.1007/s10509-014-1894-y |
| WOS Headings | Science & Technology ; Physical Sciences |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | ACTIVE GALACTIC NUCLEI ; MULTIFREQUENCY OBSERVATIONS ; SPECTRAL-ANALYSIS ; BL-LACERTAE ; SPACED DATA ; VARIABILITY ; MILLIMETER ; OUTBURSTS ; BLAZARS ; JET |
| WOS Research Area | Astronomy & Astrophysics |
| WOS Subject | Astronomy & Astrophysics |
| WOS ID | WOS:000336975200024 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/597 |
| Collection | 射电天文研究室_星系宇宙学研究团组 射电天文研究室 |
| Affiliation | 1.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China 2.Guangxi Univ, Dept Phys, Nanning 530004, Peoples R China 3.Guangxi Univ, GXU NAOC Ctr Astrophys & Space Sci, Nanning 530004, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| First Author Affilication | Xinjiang Astronomical Observatory, Chinese Academy of Sciences |
| Recommended Citation GB/T 7714 | Liu, Baorong,Liu, Xiang. Periodic oscillation in the long-term radio light curves of Quasar 1156+295[J]. ASTROPHYSICS AND SPACE SCIENCE,2014,352(1):215-220. |
| APA | Liu, Baorong,&Liu, Xiang.(2014).Periodic oscillation in the long-term radio light curves of Quasar 1156+295.ASTROPHYSICS AND SPACE SCIENCE,352(1),215-220. |
| MLA | Liu, Baorong,et al."Periodic oscillation in the long-term radio light curves of Quasar 1156+295".ASTROPHYSICS AND SPACE SCIENCE 352.1(2014):215-220. |
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| File Name/Size | DocType | Version | Access | License | ||
| Periodic oscillation（550KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-ND | View Application Full Text | |
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