Sub-milliarcsecond radio structure of three quasars

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	Sub-milliarcsecond radio structure of three quasars
	Su BM(苏步美)1; Li YS(李永生)1; Baath, LB 2; Gao YF(高亦菲)1
刊名	CHINESE ASTRONOMY AND ASTROPHYSICS
	2001-01
卷号	25 期号:1 页码:23-28
关键词	quasar radio emission sub-milliarcsecond structure
ISSN号	0275-1062
通讯作者	Su, BM (reprint author), Chinese Acad Sci, Yunnan Observ, Kunming 650011, Peoples R China.
产权排序	第一完成单位
英文摘要	The quasars, 0420-014, 0748+126 and 2251+158 (3C 454.3), have been observed at 1.3cm with a global VLBI network. We have obtained the hybrid maps of the quasars at sub-milliarcsecond resolution. The brightness distribution is revealed in their nuclear regions. The observed data are fitted with a small number of Gaussian components. 2251+158 shows a core-jet structure, and its nuclear region is elongated in the direction PA = -130 degrees. The jet is curved. Its observations at the epoch 1992.9 show it to be in the course of a large burst, accompanied by several smaller ones. The strongest component has a flux of similar to 4.11 Jy (67% of the total detected flux), mostly from an area of 0.16 x 0.01 mas. Doppler boosting is probably responsible for raising the brightness temperature up to 2.6 x 10(12) K.
学科主题	Astronomy & Astrophysics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
收录类别	SCI
原文出处	http://www.sciencedirect.com/science/article/pii/S027510620100039X#
语种	英语
WOS记录号	WOS:000167510400003
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/4133]
专题	云南天文台_其他
作者单位	1.Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011 China 2.Center for Imaging Technologies, Halmstad Univ. S-301 18 Halmstad, Sweden
推荐引用方式 GB/T 7714	Su BM,Li YS,Baath, LB,et al. Sub-milliarcsecond radio structure of three quasars[J]. CHINESE ASTRONOMY AND ASTROPHYSICS,2001,25(1):23-28.
APA	Su BM,Li YS,Baath, LB,&Gao YF.(2001).Sub-milliarcsecond radio structure of three quasars.CHINESE ASTRONOMY AND ASTROPHYSICS,25(1),23-28.
MLA	Su BM,et al."Sub-milliarcsecond radio structure of three quasars".CHINESE ASTRONOMY AND ASTROPHYSICS 25.1(2001):23-28.