The center of activity in the compact steep-spectrum superluminal source 3C 138
文献类型：期刊论文
| 作者 | Shen, ZQ; Shang, LL; Cai, HB; Chen, X ; Jiang, DR; Chen, YJ; Liu, X; Yang, R; Kameno, S; Hirabayashi, H
|
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 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 |
| 公开日期 | 2010-11-08 |
| 源URL | [http://119.78.226.72//handle/331011/12301]  |
| 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, 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. |
入库方式： OAI收割
来源：上海天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。