MULTI-EPOCH MULTI-FREQUENCY VLBI STUDY OF THE PARSEC-SCALE JET IN THE BLAZAR 3C 66A
文献类型：期刊论文
| 作者 | Zhao, Guang-Yao1,2 ; Chen, Yong-Jun1,3; Shen, Zhi-Qiang1,3; Sudou, Hiroshi4; Iguchi, Satoru5
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| 刊名 | ASTRONOMICAL JOURNAL
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| 出版日期 | 2015-02-01 |
| 卷号 | 149期号:2页码:1 |
| 关键词 | galaxies: individual (3C 66A) galaxies: jets radio continuum: galaxies |
| 英文摘要 | We present observational results of the gamma-ray blazar 3C 66A at 2.3, 8.4, and 22 GHz at four epochs during 2004-2005 with the VLBA. The resulting images show an overall core-jet structure extending roughly to the south, with two intermediate breaks occurring in the region near the core. By model-fitting to the visibility data, the northmost component, which is also the brightest, is identified as the core according to its relatively flat spectrum and its compactness. Combining our results with previous results to investigate the proper motions of the jet components, we found the kinematics of 3C 66A to be quite complicated, with components of inward and outward, subluminal and superluminal motions all detected in the radio structure. The superluminal motions indicate strong Doppler boosting exists in the jet. The apparent inward motions of the innermost components last for at least 10 years and could not be caused by newborn components. A possible reason could be non-stationarity of the core due to opacity change. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | ACTIVE GALACTIC NUCLEI ; COMPACT RADIO-SOURCES ; BL LACERTAE OBJECTS ; RAY BRIGHT BLAZARS ; BASE-LINE ARRAY ; SUPERLUMINAL MOTION ; HIGH-FREQUENCY ; KINEMATICS ; FERMI ; QUASARS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000349360200011 |
| 源URL | [http://119.78.226.72/handle/331011/18204]  |
| 专题 | 上海天文台_星系宇宙学重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, Shanghai 200030, Peoples R China 2.Korea Astron & Space Sci Inst, Taejon 305348, South Korea 3.Chinese Acad Sci, Key Lab Radio Astron, Beijing 100864, Peoples R China 4.Gifu Univ, Fac Engn, Gifu 5011193, Japan 5.Natl Astron Observ Japan, Tokyo 1818588, Japan |
| 推荐引用方式 GB/T 7714 | Zhao, Guang-Yao,Chen, Yong-Jun,Shen, Zhi-Qiang,et al. MULTI-EPOCH MULTI-FREQUENCY VLBI STUDY OF THE PARSEC-SCALE JET IN THE BLAZAR 3C 66A[J]. ASTRONOMICAL JOURNAL,2015,149(2):1. |
| APA | Zhao, Guang-Yao,Chen, Yong-Jun,Shen, Zhi-Qiang,Sudou, Hiroshi,&Iguchi, Satoru.(2015).MULTI-EPOCH MULTI-FREQUENCY VLBI STUDY OF THE PARSEC-SCALE JET IN THE BLAZAR 3C 66A.ASTRONOMICAL JOURNAL,149(2),1. |
| MLA | Zhao, Guang-Yao,et al."MULTI-EPOCH MULTI-FREQUENCY VLBI STUDY OF THE PARSEC-SCALE JET IN THE BLAZAR 3C 66A".ASTRONOMICAL JOURNAL 149.2(2015):1. |
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来源：上海天文台
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