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MULTI-EPOCH MULTI-FREQUENCY VLBI STUDY OF THE PARSEC-SCALE JET IN THE BLAZAR 3C 66A
Zhao, Guang-Yao1,2; Chen, Yong-Jun1,3; Shen, Zhi-Qiang1,3; Sudou, Hiroshi4; Iguchi, Satoru5
2015-02-01
Source PublicationASTRONOMICAL JOURNAL
Volume149Issue:2
AbstractWe 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.
KeywordGalaxies: Individual (3c 66a) Galaxies: Jets Radio Continuum: Galaxies
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1088/0004-6256/149/2/46
WOS KeywordACTIVE GALACTIC NUCLEI ; COMPACT RADIO-SOURCES ; BL LACERTAE OBJECTS ; RAY BRIGHT BLAZARS ; BASE-LINE ARRAY ; SUPERLUMINAL MOTION ; HIGH-FREQUENCY ; KINEMATICS ; FERMI ; QUASARS
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000349360200011
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Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/15778
Collection毫米波和亚毫米波技术实验室
Affiliation1.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
Recommended Citation
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).
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).
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).
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