VLBI observations of bright AGN jets with the KVN and VERA Array (KaVA): Evaluation of imaging capability
文献类型：期刊论文
| 作者 | Niinuma, Kotaro1; Lee, Sang-Sung2; Kino, Motoki2,3; Sohn, Bong Won2,4; Akiyama, Kazunori5,6; Zhao, Guang-Yao2 ; Sawada-Satoh, Satoko7; Trippe, Sascha8; Hada, Kazuhiro6,9; Jung, Taehyun2
|
| 刊名 | PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
 |
| 出版日期 | 2014-12-01 |
| 卷号 | 66期号:6页码:1 |
| 关键词 | galaxies: active galaxies: jets techniques: interferometric radio continuum: galaxies |
| 英文摘要 | The Korean very-long-baseline interferometry (VLBI) network (KVN) and VLBI Exploration of Radio Astrometry (VERA) Array (KaVA) is the first international VLBI array dedicated to high-frequency (23-43 GHz bands) observations in East Asia. Here, we report the first imaging observations of three bright active galactic nuclei (AGNs) known for their complex morphologies: 4C 39.25, 3C 273, and M87. This is one of the initial results of KaVA's early operation. Our KaVA images reveal extended outflows with complex substructures such as knots and limb brightening, in agreement with previous Very Long Baseline Array (VLBA) observations. Angular resolutions are better than 1.4 and 0.8 mas at 23 and 43 GHz, respectively. KaVA achieves a high dynamic range of similar to 1000, more than three times the value achieved by VERA. We conclude that KaVA is a powerful array with a great potential for the study of AGN outflows, at least comparable to the best existing radio interferometric arrays. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | ACTIVE GALACTIC NUCLEI ; DATA-ACQUISITION SYSTEM ; GHZ CALIBRATOR SURVEY ; GAMMA-RAY ; 4C 39.25 ; EARLY SCIENCE ; BLACK-HOLE ; 3C 273 ; RADIO ; NETWORK |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000349095900006 |
| 源URL | [http://119.78.226.72/handle/331011/18163]  |
| 专题 | 上海天文台_星系宇宙学重点实验室 |
| 作者单位 | 1.Yamaguchi Univ, Grad Sch Sci & Engn, Yamaguchi 7538512, Japan 2.Korea Astron & Space Sci Inst, Taejon 305348, South Korea 3.Japan Aerosp Explorat Agcy, Inst Space & Astronaut Sci, Chuo Ku, Sagamihara, Kanagawa 2298510, Japan 4.Univ Sci & Technol, Dept Astron & Space Sci, Taejon, South Korea 5.Univ Tokyo, Grad Sch Sci, Dept Astron, Bunkyo Ku, Tokyo 1130033, Japan 6.Natl Astoron Observ Japan, Mizusawa VLBI Observ, Mitaka, Tokyo 1818588, Japan 7.Natl Inst Nat Sci, Natl Astron Observ Japan, Mizusawa VLBI Observ, Mizusawa Ku, Oshu, Iwate 0230861, Japan 8.Seoul Natl Univ, Dept Phys & Astron, Seoul 151742, South Korea 9.INAF Ist Radioastron, I-40129 Bologna, Italy 10.Grad Univ Adv Studies SOKENDAI, Dept Astron Sci, Mitaka, Tokyo 1818588, Japan |
| 推荐引用方式 GB/T 7714 | Niinuma, Kotaro,Lee, Sang-Sung,Kino, Motoki,et al. VLBI observations of bright AGN jets with the KVN and VERA Array (KaVA): Evaluation of imaging capability[J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,2014,66(6):1. |
| APA | Niinuma, Kotaro.,Lee, Sang-Sung.,Kino, Motoki.,Sohn, Bong Won.,Akiyama, Kazunori.,...&Yun, Young Joo.(2014).VLBI observations of bright AGN jets with the KVN and VERA Array (KaVA): Evaluation of imaging capability.PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN,66(6),1. |
| MLA | Niinuma, Kotaro,et al."VLBI observations of bright AGN jets with the KVN and VERA Array (KaVA): Evaluation of imaging capability".PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 66.6(2014):1. |
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。