A 327 MHz VLBI study of high redshift radio galaxies 1345+245, 1809+407 and 2349+289
文献类型:期刊论文
作者 | Cai, Z; Nan, R![]() |
刊名 | ASTRONOMY & ASTROPHYSICS
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出版日期 | 2002 |
卷号 | 381期号:2页码:401-407 |
关键词 | galaxies : high redshift galaxies : magnetic fields galaxies : jets |
英文摘要 | Three high redshift radio galaxies, 1345+245 (4C 24.28, z = 2.889), 1809+407 (4C 40.36, z = 2.267) and 2349+289 (4C 28.58, z = 2.905) were observed with VLBI at 327 MHz giving an angular resolution of similar or equal to40-100 mas and yielding images with the off-source noise level of 3sigma similar or equal to 3.5 mJy/beam. On the centiarcsecond scale, the three sources are each characterized by two components with asymmetry both in flux density and in size. The compact components in the VLBI maps correspond to the hot spots in the VLA maps. No radio cores have been detected. The physical parameters for the components derived are consistent with a model in which shocks accelerate electrons in the hotspots. |
收录类别 | SCI |
语种 | 英语 |
WOS记录号 | WOS:000173343100005 |
源URL | [http://ir.bao.ac.cn/handle/114a11/8544] ![]() |
专题 | 国家天文台_射电天文研究部 |
作者单位 | 1.Chinese Acad Sci, Natl Astron Observ, Beijing Astron Observ, Beijing 100012, Peoples R China 2.VLBI Europe, Joint Inst, NL-7990 AA Dwingeloo, Netherlands 3.Leiden Univ, NL-2300 RA Leiden, Netherlands 4.Space Res Org Netherlands, NL-3584 CA Utrecht, Netherlands 5.Shanghai Astron Observ, Shanghai 200030, Peoples R China 6.Univ Hawaii, Inst Astron, Honolulu, HI 96822 USA |
推荐引用方式 GB/T 7714 | Cai, Z,Nan, R,Schilizzi, RT,et al. A 327 MHz VLBI study of high redshift radio galaxies 1345+245, 1809+407 and 2349+289[J]. ASTRONOMY & ASTROPHYSICS,2002,381(2):401-407. |
APA | Cai, Z.,Nan, R.,Schilizzi, RT.,Miley, GK.,Bremer, MAR.,...&Zhang, HY.(2002).A 327 MHz VLBI study of high redshift radio galaxies 1345+245, 1809+407 and 2349+289.ASTRONOMY & ASTROPHYSICS,381(2),401-407. |
MLA | Cai, Z,et al."A 327 MHz VLBI study of high redshift radio galaxies 1345+245, 1809+407 and 2349+289".ASTRONOMY & ASTROPHYSICS 381.2(2002):401-407. |
入库方式: OAI收割
来源:国家天文台
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