East Asian VLBI Network observations of active galactic nuclei jets: imaging with KaVA plus Tianma plus Nanshan

doi:10.1088/1674-4527/21/8/205

	East Asian VLBI Network observations of active galactic nuclei jets: imaging with KaVA plus Tianma plus Nanshan
	Cui, Yu-Zhu 1,2; Hada, Kazuhiro 1,2; Kino, Motoki 2,3; Sohn, Bong-Won 4,5,6; Park, Jongho 7; Ro, Hyun-Wook 4,5; Sawada-Satoh, Satoko 8; Jiang, Wu 9,11; Cui, Lang10,11 ; Honma, Mareki 1,2,12; Shen, Zhi-Qiang 9,11; Tazaki, Fumie 2; An, Tao 9,11; Cho, Ilje 4,6,13; Zhao, Guang-Yao 4,13; Cheng, Xiao-Peng 4; Niinuma, Kotaro 8; Wajima, Kiyoaki 4; Zhang, Ying-Kang 9; Kawaguchi, Noriyuki 2; Algaba, Juan-Carlos 14; Koyama, Shoko 7; Hirota, Tomoya 2; Yonekura, Yoshinori 15; Sakai, Nobuyuki 4; Xia, Bo 9; Jiang, Yong-Bin 9; Yu, Lin-Feng 9; Gou, Wei 9; Hwang, Ju-Yeon 4; Jiang, Yong-Chen 9; Sun, Yun-Xia 9; Jung, Dong-Kyu 4; Kim, Hyo-Ryoung 4; Kim, Jeong-Sook 4; Kobayashi, Hideyuki 2; Lee, Jee-Won 4; Lee, Jeong-Ae 16; Zhang, Hua10 ; Li, Guang-Hui10 ; Xu, Zhi-Qiang 9; Li, Peng10 ; Oh, Jung-Hwan 4; Oh, Se-Jin 4; Oh, Chung-Sik 4; Oyama, Tomoaki 2; Roh, Duk-Gyoo 4; Shibata, Katsunori-M 2; Guo, Wen 9; Zhao, Rong-Bing 9; Zhong, Wei-Ye 9; Wang, Jin-Qing 9; Yang, Wen-Jun10 ; Yan, Hao10 ; Yeom, Jae-Hwan 4; Li, Bin 9; Li, Xiao-Fei10 ; Yuan, Jian-Ping10 ; Dong, Jian 9; Chen, Zhong 9; Akiyama, Kazunori 17,18; Asada, Keiichi 7; Byun, Do-Young 4; Hagiwara, Yoshiaki 19; Hodgson, Jeffrey 4; Jung, Tae-Hyun 4; Kim, Kee-Tae 4; Lee, Sang-Sung 4; Yi, Kunwoo 20; Liu, Qing-Hui 9; Liu, Xiang10,11 ; Lu, Ru-Sen 9,11,21; Nakamura, Masanori 7; Trippe, Sascha 20,22; Wang, Na10,11 ; Wang, Xue-Zheng 9; Zhang, Bo 9
	2021-10-01
Source Publication	RESEARCH IN ASTRONOMY AND ASTROPHYSICS
ISSN	1674-4527
Volume	21 Issue:8 Pages:205
Contribution Rank	4
Abstract	The East Asian Very Long Baseline Interferometry (VLBI) Network (EAVN) is a rapidly evolving international VLBI array that is currently promoted under joint efforts among China, Japan and Korea. EAVN aims at forming a joint VLBI Network by combining a large number of radio telescopes distributed over East Asian regions. After the combination of the Korean VLBI Network (KVN) and the VLBI Exploration of Radio Astrometry (VERA) into KaVA, further expansion with the joint array in East Asia is actively promoted. Here we report the first imaging results (at 22 and 43 GHz) of bright radio sources obtained with KaVA connected to Tianma 65-m and Nanshan 26-m Radio Telescopes in China. To test the EAVN imaging performance for different sources, we observed four active galactic nuclei (AGN) having different brightness and morphology. As a result, we confirmed that the Tianma 65-m Radio Telescope (TMRT) significantly enhances the overall array sensitivity, a factor of 4 improvement in baseline sensitivity and 2 in image dynamic range compared to the case of KaVA only. The addition of the Nanshan 26-m Radio Telescope (NSRT) further doubled the east-west angular resolution. With the resulting high-dynamic-range, high-resolution images with EAVN (KaVA+TMRT+NSRT), various fine-scale structures in our targets, such as the counter-jet in M87, a kink-like morphology of the 3C 273 jet and the weak emission in other sources are successfully detected. This demonstrates the powerful capability of EAVN to study AGN jets and to achieve other science goals in general. Ongoing expansion of EAVN will further enhance the angular resolution, detection sensitivity and frequency coverage of the network.
Keyword	galaxies active galaxies jets instrumentation interferometers radio continuum galaxies
DOI	10.1088/1674-4527/21/8/205
Indexed By	SCI
Language	英语
WOS Keyword	RADIO JET ; AGN JETS ; TELESCOPE ; GALAXIES
Funding Project	Graduate University for Advanced Studies (SOKENDAI) ; Japanese Government (MEXT) Scholarship ; JSPS KAKENHI[JP18K03656] ; JSPS KAKENHI[JP18H03721] ; JSPS KAKENHI[JP19H01943] ; JSPS KAKENHI[JP18KK0090] ; Mitsubishi Foundation[201911019] ; EACOA Fellowship - East Asia Core Observatories Association of the Academia Sinica Institute of Astronomy and Astrophysics ; EACOA Fellowship - East Asia Core Observatories Association of the National Astronomical Observatory of Japan ; EACOA Fellowship - East Asia Core Observatories Association of the Center for Astronomical Mega-Science ; EACOA Fellowship - East Asia Core Observatories Association of the Chinese Academy of Sciences ; EACOA Fellowship - East Asia Core Observatories Association of the Korea Astronomy and Space Science Institute ; National Research Foundation (NRF) of Korea[2014H1A2A1018695] ; National Research Foundation (NRF) of Korea[2015H1A2A1033752] ; NRF[2019R1F1A1059721] ; Major Program of the National Natural Science Foundation of China (NSFC)[11590780] ; Major Program of the National Natural Science Foundation of China (NSFC)[11590784] ; Knowledge Innovation Program of the Chinese Academy of Sciences[KJCX1-YW-18] ; Scientific Program of Shanghai Municipality[08DZ1160100] ; Key Laboratory for Radio Astronomy, CAS ; NSFC[11803071] ; NSFC[U2031212] ; NSFC[61931002] ; NSFC[11933007] ; National Key R&D Program of China[2018YFA0404602] ; CAS 'Light of West China' Program[2018-XBQNXZ-B-021] ; Youth Innovation Promotion Association of the CAS[2017084] ; Fundamental Research Grant Scheme (FRGS)[FRGS/1/2019/STG02/UM/02/6] ; Max Planck Partner Group of the MPG ; CAS ; Research Program of Fundamental and Frontier Sciences, CAS[ZDBS-LY-SLH011]
WOS Research Area	Astronomy & Astrophysics
WOS Subject	Astronomy & Astrophysics
WOS ID	WOS:000711660200001
Publisher	NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
Funding Organization	Graduate University for Advanced Studies (SOKENDAI) ; Japanese Government (MEXT) Scholarship ; JSPS KAKENHI ; Mitsubishi Foundation ; EACOA Fellowship - East Asia Core Observatories Association of the Academia Sinica Institute of Astronomy and Astrophysics ; EACOA Fellowship - East Asia Core Observatories Association of the National Astronomical Observatory of Japan ; EACOA Fellowship - East Asia Core Observatories Association of the Center for Astronomical Mega-Science ; EACOA Fellowship - East Asia Core Observatories Association of the Chinese Academy of Sciences ; EACOA Fellowship - East Asia Core Observatories Association of the Korea Astronomy and Space Science Institute ; National Research Foundation (NRF) of Korea ; NRF ; Major Program of the National Natural Science Foundation of China (NSFC) ; Knowledge Innovation Program of the Chinese Academy of Sciences ; Scientific Program of Shanghai Municipality ; Key Laboratory for Radio Astronomy, CAS ; NSFC ; National Key R&D Program of China ; CAS 'Light of West China' Program ; Youth Innovation Promotion Association of the CAS ; Fundamental Research Grant Scheme (FRGS) ; Max Planck Partner Group of the MPG ; CAS ; Research Program of Fundamental and Frontier Sciences, CAS
Citation statistics	Cited Times:15[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.xao.ac.cn/handle/45760611-7/4366
Collection	射电天文研究室_星系宇宙学研究团组射电天文研究室_脉冲星研究团组射电天文研究室_26米望远镜运行组射电天文研究室_微波技术实验室射电天文研究室_行星科学研究团组射电天文研究室_南山观测站科研仪器设备产出_利用南山26米射电望远镜（NSRT）观测数据的文章
Corresponding Author	Cui, Yu-Zhu
Affiliation	1.Grad Univ Adv Studies, Dept Astron Sci, SOKENDAI, 2-21-1 Osawa, Mitaka, Tokyo 1818588, Japan 2.Natl Astron Observ Japan, Mizusawa VLBI Observ, 2-12 Hoshigaoka, Oshu, Iwate 0230861, Japan 3.Kogakuin Univ Technol & Engn, Acad Support Ctr, 2665-1 Nakano, Hachioji, Tokyo 1920015, Japan 4.Korea Astron & Space Sci Inst, Daejeon 34055, South Korea 5.Yonsei Univ, Dept Astron, 50 Yonsei Ro, Seoul 03722, South Korea 6.Univ Sci & Technol, Dept Astron & Space Sci, 217 Gajeong Ro, Daejeon, South Korea 7.Acad Sinica, Inst Astron & Astrophys, 645 N Aohoku Pl, Hilo, HI 96720 USA 8.Yamaguchi Univ, Grad Sch Sci & Technol Innovat, Yoshida 1677-1, Yamaguchi, Yamaguchi 7538512, Japan 9.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China 10.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China 11.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Peoples R China 12.Univ Tokyo, Inst Astron, 2-21-1 Osawa, Mitaka, Tokyo 1810015, Japan 13.CSIC, Inst Astrofis Andalucia, Glorieta Astron S-N, E-18008 Granada, Spain 14.Univ Malaya, Fac Sci, Dept Phys, Kuala Lumpur 50603, Malaysia 15.Ibaraki Univ, Ctr Astron, 2-1-1 Bunkyo, Mito, Ibaraki 3108512, Japan 16.Space Light Lab, 77,Yangjaedae Ro 86 Rd, Seoul, South Korea 17.MIT, Haystack Observ, 99 Millstone Rd, Westford, MA 01886 USA 18.Natl Radio Astron Observ, 520 Edgemont Rd, Charlottesville, VA 22903 USA 19.Toyo Univ, Bunkyo Ku, 5-28-20 Hakusan, Tokyo 1128606, Japan 20.Seoul Natl Univ, Dept Phys & Astron, Seoul 08826, South Korea 21.Max Planck Inst Radio Astron, Hugel 69, D-53121 Bonn, Germany 22.Seoul Natl Univ, SNU Astron Res Ctr, Seoul 08826, South Korea
Recommended Citation GB/T 7714	Cui, Yu-Zhu,Hada, Kazuhiro,Kino, Motoki,et al. East Asian VLBI Network observations of active galactic nuclei jets: imaging with KaVA plus Tianma plus Nanshan[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2021,21(8):205.
APA	Cui, Yu-Zhu.,Hada, Kazuhiro.,Kino, Motoki.,Sohn, Bong-Won.,Park, Jongho.,...&Zhang, Bo.(2021).East Asian VLBI Network observations of active galactic nuclei jets: imaging with KaVA plus Tianma plus Nanshan.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,21(8),205.
MLA	Cui, Yu-Zhu,et al."East Asian VLBI Network observations of active galactic nuclei jets: imaging with KaVA plus Tianma plus Nanshan".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 21.8(2021):205.

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