The radio counter-jet of the QSO 3C 48
文献类型：期刊论文
| 作者 | Feng, WX; An, T ; Hong, XY; Zhao, JH; Venturi, T; Shen, ZQ; Wang, WH
|
| 刊名 | ASTRONOMY & ASTROPHYSICS
 |
| 出版日期 | 2005-04-01 |
| 卷号 | 434期号:1页码:101-107 |
| 关键词 | galaxies : quasars : individual : 3C 48 galaxies : jets galaxies : interactions |
| 通讯作者 | Astronomy&Astrophysics |
| 英文摘要 | We present multi- frequency radio observational results of the quasar 3C 48. The observations were carried out with the Very Large Array ( VLA) at five frequencies, 0.33, 1.5, 4.8, 8.4, and 22.5 GHz, and with the Multi- Element Radio Linked Interferometer Network ( MERLIN) at the two frequencies of 1.6 and 5 GHz. The source shows a one- sided jet to the north within 1", which then extends to the northeast and becomes diffuse. Two bright components ( N2 and N3), containing most of the flux density, are present in the northern jet. The spectral index of the two components is alpha(N2) similar to -0.99 +/- 0.12 and alpha(N3) similar to - 0.84 +/- 0.23 ( S proportional to nu(alpha)). Our images show the presence of an extended structure surrounding component N2, suggestive of strong interaction between the jet and the interstellar medium ( ISM) of the host galaxy. A steep- spectrum component, labelled S, located 0.25 " southwest to the flat- spectrum component which could be the core of 3C 48, is detected at a significance of > 15 sigma. Both the location and the steepness of the spectrum of component S suggest the presence of a counter- jet in 3C 48. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | 射电天文学 |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | STEEP-SPECTRUM SOURCES ; HOST GALAXY ; CALIBRATORS ; SCALE ; 3C-48 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000228097300013 |
| 公开日期 | 2010-04-29 |
| 源URL | [http://119.78.226.72//handle/331011/8023]  |
| 专题 | 上海天文台_VLBI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.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 4.Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA 5.CNR, Ist Radioastron, I-4129 Bologna, Italy |
| 推荐引用方式 GB/T 7714 | Feng, WX,An, T,Hong, XY,et al. The radio counter-jet of the QSO 3C 48[J]. ASTRONOMY & ASTROPHYSICS,2005,434(1):101-107. |
| APA | Feng, WX.,An, T.,Hong, XY.,Zhao, JH.,Venturi, T.,...&Wang, WH.(2005).The radio counter-jet of the QSO 3C 48.ASTRONOMY & ASTROPHYSICS,434(1),101-107. |
| MLA | Feng, WX,et al."The radio counter-jet of the QSO 3C 48".ASTRONOMY & ASTROPHYSICS 434.1(2005):101-107. |
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来源：上海天文台
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