3C-138 - MULTIFREQUENCY OBSERVATIONS OF THE SUGGESTED NAKED JET COMPACT STEEP-SPECTRUM SOURCE
文献类型：期刊论文
| 作者 | AKUJOR, CE; SPENCER, RE; ZHANG, FJ; FANTI, C; LUDKE, E; GARRINGTON, ST |
| 刊名 | ASTRONOMY & ASTROPHYSICS
 |
| 出版日期 | 1993-07-01 |
| 卷号 | 274期号:3页码:752-756 |
| 关键词 | QUASAR CSS JETS 3C-138 |
| 英文摘要 | MERLIN observations of the compact steep-spectrum quasar 3C 138 at 0.151, 0.408, 1.666 and 4.995 GHz, a combined MERLIN-EVN image at 1.666 GHz and VLA polarisation images at 22.5 GHz are presented. The radio structure is unresolved at 0.151 and 0.408 GHz and shows no diffuse extended halo. At high frequencies its structure is largely linear and dominated by five distinct knots and compact components. We identify the two terminal components as compact radio lobes and infer that 3C 138 is a small double source with a two-sided jet structure rather than a 'naked-jet'. The unusual steepening of the radio spectrum away from the nucleus is consistent with a young source, perhaps with dense jets, that has as yet not formed back-flowing cocoon associated with classical FRII radio sources. We also calculate the physical parameters in the components. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | EXTRAGALACTIC RADIO-SOURCES ; VLA OBSERVATIONS ; MERLIN ; IMAGES ; CM |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:A1993LP33400010 |
| 源URL | [http://119.78.226.72/handle/331011/19514]  |
| 专题 | 上海天文台_星系宇宙学重点实验室 |
| 作者单位 | 1.UNIV MANCHESTER, NUFFIELD RADIO ASTRON LABS, MACCLESFIELD SK11 9DL, CHESHIRE, ENGLAND 2.CHINESE ACAD SCI, SHANGHAI OBSERV, SHANGHAI, PEOPLES R CHINA 3.IST RADIOASTRON, I-40126 BOLOGNA, ITALY 4.UNIV BOLOGNA, DEPT ASTRON, I-40126 BOLOGNA, ITALY |
| 推荐引用方式 GB/T 7714 | AKUJOR, CE,SPENCER, RE,ZHANG, FJ,et al. 3C-138 - MULTIFREQUENCY OBSERVATIONS OF THE SUGGESTED NAKED JET COMPACT STEEP-SPECTRUM SOURCE[J]. ASTRONOMY & ASTROPHYSICS,1993,274(3):752-756. |
| APA | AKUJOR, CE,SPENCER, RE,ZHANG, FJ,FANTI, C,LUDKE, E,&GARRINGTON, ST.(1993).3C-138 - MULTIFREQUENCY OBSERVATIONS OF THE SUGGESTED NAKED JET COMPACT STEEP-SPECTRUM SOURCE.ASTRONOMY & ASTROPHYSICS,274(3),752-756. |
| MLA | AKUJOR, CE,et al."3C-138 - MULTIFREQUENCY OBSERVATIONS OF THE SUGGESTED NAKED JET COMPACT STEEP-SPECTRUM SOURCE".ASTRONOMY & ASTROPHYSICS 274.3(1993):752-756. |
入库方式： OAI收割
来源：上海天文台
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