The center of activity in the compact steep-spectrum superluminal source 3C 138

CORC > 新疆天文台 > 研究单元未命名 > 射电天文研究室 > 星系宇宙学研究团组

	The center of activity in the compact steep-spectrum superluminal source 3C 138
	Shen, ZQ 1; Shang, LL 1,2; Cai, HB 1,2; Chen, X 1,2; Jiang, DR 1; Chen, YJ 1; Liu, X3 ; Yang, R 4; Kameno, S 5; Hirabayashi, H 6
刊名	ASTROPHYSICAL JOURNAL
	2005-04-01
卷号	622 期号:2 页码:811-815
关键词	galaxies : active galaxies : jets galaxies : nuclei quasars : individual (3C 138) radio continuum : galaxies techniques : interferometric
英文摘要	We present the results from the first quasi-simultaneous multifrequency (2.3, 5.0, 8.4, and 15 GHz) very long baseline interferometry (VLBI) observations of the compact steep-spectrum (CSS) superluminal source 3C 138. For the first time, the spectral distribution of the components within its central 10 milliarcsecond (mas) region was obtained. This enables us to identify the component at the western end as the location of the nuclear activity, assuming that the central engine is associated with one of the detected components. The possibility that none of these visible components is the true core is also discussed. The new measurements further clarify the superluminal motions of its inner jet components. The multifrequency data reveal a convex spectrum in one jet component, implying the existence of free-free absorption by the ambient dense plasma.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	RADIO-SOURCES ; VLBI ; MOTION
收录类别	SCI
语种	英语
WOS记录号	WOS:000228093400004
内容类型	期刊论文
源URL	[http://ir.xao.ac.cn/handle/45760611-7/810]
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, Shanghai Astron Observ, Shanghai 200030, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China 3.Natl Astron Observ, Urumqi Observ, Urumqi 830011, Xinjiang, Peoples R China 4.Fudan Univ, Dept Phys, Shanghai 200433, Peoples R China 5.Natl Astron Observ Japan, Mitaka, Tokyo 1818588, Japan 6.Japan Aerosp Explorat Agcy, Inst Space & Astronaut Sci, Kanagawa 2298510, Japan
推荐引用方式 GB/T 7714	Shen, ZQ,Shang, LL,Cai, HB,et al. The center of activity in the compact steep-spectrum superluminal source 3C 138[J]. ASTROPHYSICAL JOURNAL,2005,622(2):811-815.
APA	Shen, ZQ.,Shang, LL.,Cai, HB.,Chen, X.,Jiang, DR.,...&Hirabayashi, H.(2005).The center of activity in the compact steep-spectrum superluminal source 3C 138.ASTROPHYSICAL JOURNAL,622(2),811-815.
MLA	Shen, ZQ,et al."The center of activity in the compact steep-spectrum superluminal source 3C 138".ASTROPHYSICAL JOURNAL 622.2(2005):811-815.