Correlations between the peak flux density and the position angle of inner-jet in three blazars
文献类型：期刊论文
| 作者 | Liu, Xiang1,2 ; Mi, Ligong1,3; Liu, Baorong1,3,4; Li, Quanwei1,3
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| 刊名 | ASTROPHYSICS AND SPACE SCIENCE
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| 出版日期 | 2012-12-01 |
| 卷号 | 342期号:2页码:465-473 |
| 关键词 | BL Lacertae objects: individual: S5 0716+714, 3C 371, 4C+56.27 Radio continuum: galaxies Galaxies: jets |
| ISSN号 | 0004-640X |
| 通讯作者 | liux@xao.ac.cn |
| 英文摘要 | We aim to investigate the relation between the long-term flux density and the position angle (PA) evolution of inner-jet in blazars. We have carried out the elliptic Gaussian model-fit to the 'core' of 50 blazars from 15 GHz VLBA data, and analyzed the variability properties of three blazars from the model-fit results. Diverse correlations between the long-term peak flux density and the PA evolution of the major axis of the 'core' have been found in similar to 20 % of the 50 sources. Of them, three typical blazars have been analyzed, which also show quasi-periodic flux variations of a few years (T). The correlation between the peak flux density and the PA of inner-jet is positive for S5 0716+714, and negative for S4 1807+698. The two sources cannot be explained with the ballistic jet models, the non-ballistic models have been analyzed to explain the two sub-luminal blazars. A correlation between the peak flux density and the PA (with a T/4 time lag) of inner-jet is found in [HB89] 1823+568, this correlation can be explained with a ballistic precession jet model. All the explanations are based mainly on the geometric beaming effect; physical flux density variations from the jet base would be considered for more complicated situations in future, which could account for the no or less significance of the correlation between the peak flux density and the PA of inner-jet in the majority blazars of our sample. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | 星系和宇宙学 |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | ACTIVE GALACTIC NUCLEI ; BL LACERTAE OBJECTS ; GAMMA-RAY ; COMPLETE SAMPLE ; LAC OBJECTS ; S5 0716+714 ; RADIO JETS ; DOPPLER FACTORS ; VARIABILITY ; KINEMATICS |
| 收录类别 | SCI |
| 资助信息 | National Natural Science Foundation of China (Grant No. 11073036); the 973 Program of China (2009CB824800); ASI(I/005/11/0) |
| 原文出处 | http://link.springer.com/journal/10509 |
| 语种 | 英语 |
| WOS记录号 | WOS:000310222700021 |
| 公开日期 | 2014-12-12 |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/415]  |
| 专题 | 星系宇宙学研究团组 新疆天文台_射电天文研究室 |
| 作者单位 | 1.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China 2.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Peoples R China 3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 4.Guangxi Univ, Coll Phys Sci & Technol, Nanning 530004, Guangxi, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Xiang,Mi, Ligong,Liu, Baorong,et al. Correlations between the peak flux density and the position angle of inner-jet in three blazars[J]. ASTROPHYSICS AND SPACE SCIENCE,2012,342(2):465-473. |
| APA | Liu, Xiang,Mi, Ligong,Liu, Baorong,&Li, Quanwei.(2012).Correlations between the peak flux density and the position angle of inner-jet in three blazars.ASTROPHYSICS AND SPACE SCIENCE,342(2),465-473. |
| MLA | Liu, Xiang,et al."Correlations between the peak flux density and the position angle of inner-jet in three blazars".ASTROPHYSICS AND SPACE SCIENCE 342.2(2012):465-473. |
入库方式： OAI收割
来源：新疆天文台
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