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SOURCE-FREQUENCY PHASE-REFERENCING OBSERVATION OF AGNS WITH KAVA USING SIMULTANEOUS DUAL-FREQUENCY RECEIVING
Zhao, Guang-Yao1; Jung, Taehyun1,2; Sohn, Bong Won1,2,15; Kino, Iviotoki3,4; Honma, Mareki4,5; Dodson, Richard6; Rioja, Maria6,7,8; Han, Seog-Tae1; Shibata, Katsunori4,5; Byun, Do-Young1,2,15; Akiyama, Kazunori9; Algaba, Juan-Carlos10,17; An, Tao11,12; Cheng, Xiaopeng11,13; Cho, Ilje1,2; Cui, Yuzhu4; Hada, Kazuhiro4,5; Hodgson, Jeffrey A.1; Jiang, Wu11,12; Lee, Jee Won1; Lee, Jeong Ae10; Niinuma, Kotaro14; Park, Jong-Ho10; Ro, Hyunwook15; Sawada-Satoh, Satoko16; Shen, Zhi-Qiang11,12; Tazaki, Fumie4; Trippe, Sascha10; Wajima, Kiyoaki1; Zhang, Yingkang11,13
2019-02-01
Source PublicationJOURNAL OF THE KOREAN ASTRONOMICAL SOCIETY
ISSN1225-4614
Volume52Issue:1Pages:23-30
Corresponding AuthorZhao, Guang-Yao(gyzhao@kasi.re.kr)
AbstractThe KVN(Korean VLBI Network)-style simultaneous multi-frequency receiving mode is demonstrated to be promising for mm-VLBI observations. Recently, other Very long baseline interferometry (VLBI) facilities all over the globe start to implement compatible optics systems. Simultaneous dual/multi-frequency VLBI observations at mm wavelengths with international baselines are thus possible. In this paper, we present the results from the first successful simultaneous 22/43 GHz dual-frequency observation with KaVA(KVN and VERA array), including images and astrometric results. Our analysis shows that the newly implemented simultaneous receiving system has brought a significant extension of the coherence time of the 43 GHz visibility phases along the international baselines. The astrometric results obtained with KaVA are consistent with those obtained with the independent analysis of the KVN data. Our results thus confirm the good performance of the simultaneous receiving systems for the non-KVN stations. Future simultaneous observations with more global stations bring even higher sensitivity and micro-arcsecond level astrometric measurements of the targets.
Keywordgalaxies: active galaxies: individual: 4C 39.25, 0945+408 astrometry techniques: interferometric
DOI10.5303/JKAS.2019.52.1.23
WOS KeywordVLBI ; OPTICS ; JETS
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000461832800003
PublisherKOREAN ASTRONOMICAL SOCIETY
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/23946
Collection中国科学院紫金山天文台
Corresponding AuthorZhao, Guang-Yao
Affiliation1.Korea Astron & Space Sci Inst, Daejeon 34055, South Korea
2.Univ Sci & Technol, 217 Gajeong Ro, Daejeon 34113, South Korea
3.Kogakuin Univ, Acad Support Ctr, 2665-1 Nakano, Hachioji, Tokyo 1920015, Japan
4.Natl Astron Observ Japan, 2-21-1 Osawa, Mitaka, Tokyo 1818588, Japan
5.SOKENDAI, Dept Astron Sci, 2-21-1 Osawa, Mitaka, Tokyo 1818588, Japan
6.Univ Western Australia, ICRAR, M468, 35 Stirling Hwy, Perth, WA 6009, Australia
7.CSIRO Astron & Space Sci, 26 Dick Perry Ave, Kensington, NSW 6151, Australia
8.IGN, OAN, Alfonso XII 3 & 5, Madrid 28014, Spain
9.MIT, Haystack Observ, 99 Millstone Rd, Westford, MA 01886 USA
10.Seoul Natl Univ, Dept Phys & Astron, Seoul 08826, South Korea
11.Chinese Acad Sci, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China
12.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Jiangsu, Peoples R China
13.Univ Chinese Acad Sci, 19A Yuquanlu, Beijing 100049, Peoples R China
14.Yamaguchi Univ, Grad Sch Sci & Technol Innovat, Yoshida 1677-1, Yamaguchi, Yamaguchi 7538512, Japan
15.Yonsei Univ, Dept Astron, 134 Shinchon Dong, Seoul 03722, South Korea
16.Kagoshima Univ, Grad Sch Sci & Engn, 1-21-35 Korimoto, Kagoshima, Kagoshima 8900065, Japan
17.Univ Malaya, Fac Sci, Dept Phys, Kuala Lumpur 50603, Malaysia
Recommended Citation
GB/T 7714
Zhao, Guang-Yao,Jung, Taehyun,Sohn, Bong Won,et al. SOURCE-FREQUENCY PHASE-REFERENCING OBSERVATION OF AGNS WITH KAVA USING SIMULTANEOUS DUAL-FREQUENCY RECEIVING[J]. JOURNAL OF THE KOREAN ASTRONOMICAL SOCIETY,2019,52(1):23-30.
APA Zhao, Guang-Yao.,Jung, Taehyun.,Sohn, Bong Won.,Kino, Iviotoki.,Honma, Mareki.,...&Zhang, Yingkang.(2019).SOURCE-FREQUENCY PHASE-REFERENCING OBSERVATION OF AGNS WITH KAVA USING SIMULTANEOUS DUAL-FREQUENCY RECEIVING.JOURNAL OF THE KOREAN ASTRONOMICAL SOCIETY,52(1),23-30.
MLA Zhao, Guang-Yao,et al."SOURCE-FREQUENCY PHASE-REFERENCING OBSERVATION OF AGNS WITH KAVA USING SIMULTANEOUS DUAL-FREQUENCY RECEIVING".JOURNAL OF THE KOREAN ASTRONOMICAL SOCIETY 52.1(2019):23-30.
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