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VLBI observations of the puzzling BL lacertae object 0235+164

文献类型：期刊论文

作者Chu, HS; Baath, LB; Rantakyro, FT; Zhang, FJ; Nicholson, G
刊名ASTRONOMY & ASTROPHYSICS
出版日期1996-03-01
卷号307期号:1页码:15-20
关键词BL Lacertae objects galaxies radio continuum AO 0235+164 jets galaxies
英文摘要For over 20 years, many models have been proposed to explain the variability of AO 0235+164. Among them, the most favorable has been micro-lensing. We have made a series of VLBI observations on this source in order to better understand its nature. The resultant maps indicate dramatic changes in the position angle of the jet between observations as well as a correlation between the intensity of the VLBI core and flux outbursts which occurred between the observing sessions. These characteristics, in conjunction with other arguments, suggest that the source variability is intrinsic, i.e. microlensing is of minor importance. We suggest two models: 1) a model in which the jet starts at a very small angle to the line of sight and then curves away to become about 6 degrees at about 1 mas from the core; and 2) a CME (Coronal Mass Ejection) model that also may explain the violent variability in intensity, polarization position angle, and jet direction in AO 0235+164.
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 ; AO-0235+164 ; VARIABILITY ; JETS
收录类别SCI
语种英语
WOS记录号WOS:A1996TZ45200009
源URL[http://119.78.226.72/handle/331011/28123]  
专题上海天文台_VLBI研究室
作者单位1.UNIV HALMSTAD, CTR IMAGING TECHNOL, S-30118 HALMSTAD, SWEDEN
2.ACAD SINICA, SHANGHAI OBSERV, SHANGHAI 200030, PEOPLES R CHINA
3.NATL INST TELECOMMUN RES, JOHANNESBURG, SOUTH AFRICA
4.ACAD SINICA, PURPLE MT OBSERV, NANJING 210008, PEOPLES R CHINA
推荐引用方式
GB/T 7714		 Chu, HS,Baath, LB,Rantakyro, FT,et al. VLBI observations of the puzzling BL lacertae object 0235+164[J]. ASTRONOMY & ASTROPHYSICS,1996,307(1):15-20.
APA Chu, HS,Baath, LB,Rantakyro, FT,Zhang, FJ,&Nicholson, G.(1996).VLBI observations of the puzzling BL lacertae object 0235+164.ASTRONOMY & ASTROPHYSICS,307(1),15-20.
MLA Chu, HS,et al."VLBI observations of the puzzling BL lacertae object 0235+164".ASTRONOMY & ASTROPHYSICS 307.1(1996):15-20.

入库方式： OAI收割

来源：上海天文台

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