Quasi-simultaneous five-frequency VLBA observations of PKS 0528+134
文献类型：期刊论文
| 作者 | Cai, H. -B.; Shen, Z. -Q.; Chen, X. ; Shang, L. -L.
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| 刊名 | ASTRONOMY & ASTROPHYSICS
 |
| 出版日期 | 2006-11-01 |
| 卷号 | 458期号:3页码:753-760 |
| 关键词 | galaxies : jets galaxies : quasars : individual : PKS 0528+134 radio continuum : galaxies |
| 英文摘要 | We present results of Very Long Baseline Array ( VLBA) observations of PKS 0528+134 at five frequencies ( 2.3, 5.0, 8.4, 15.4, and 22.2 GHz). These quasi-simultaneous data enable us to study the spectral distribution of Very Long Baseline Interferometer ( VLBI) components for the first time in this highly variable source, from which the central compact core is identified. Our observations indicate that there are two bendings for the jet motion at parsec scale. We provide an approximate spatial fit to the curved jet trajectory using the Steffen et al. ( 1995) helical model. We further investigate the proper motions of three jet components, which all show superluminal motion. At high frequencies ( 15.4 and 22.2 GHz) we detected a new component, which is estimated to be related to a radio burst peaking at about 2000. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | 星系和宇宙学研究中心 |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | COMPACT RADIO-SOURCES ; ACTIVE GALACTIC NUCLEI ; EGRET OBSERVATIONS ; HELICAL JETS ; 8.4 GHZ ; BLAZARS ; EMISSION ; 3C-345 ; MOTION |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000241363700007 |
| 公开日期 | 2010-11-08 |
| 源URL | [http://119.78.226.72//handle/331011/12305]  |
| 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 |
| 推荐引用方式 GB/T 7714 | Cai, H. -B.,Shen, Z. -Q.,Chen, X.,et al. Quasi-simultaneous five-frequency VLBA observations of PKS 0528+134[J]. ASTRONOMY & ASTROPHYSICS,2006,458(3):753-760. |
| APA | Cai, H. -B.,Shen, Z. -Q.,Chen, X.,&Shang, L. -L..(2006).Quasi-simultaneous five-frequency VLBA observations of PKS 0528+134.ASTRONOMY & ASTROPHYSICS,458(3),753-760. |
| MLA | Cai, H. -B.,et al."Quasi-simultaneous five-frequency VLBA observations of PKS 0528+134".ASTRONOMY & ASTROPHYSICS 458.3(2006):753-760. |
入库方式： OAI收割
来源：上海天文台
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