Overview of the Observing System and Initial Scientific Accomplishments of the East Asian VLBI Network (EAVN)
Name
galaxies-10-00113-v2.pdf
Size
65.35 MB
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Adobe PDF
Checksum (MD5)
b10981a9bbcd18f50f6b8c2ed1621a56
Author(s)
Akiyama, Kazunori
Algaba, Juan-Carlos
An, Tao
Asada, Keiichi
Asanok, Kitiyanee
Byun, Do-Young
Chanapote, Thanapol
Chen, Wen
Chen, Zhong
Cheng, Xiaopeng
Date Issued
December 7, 2022
Publisher
Multidisciplinary Digital Publishing Institute
Citation
Galaxies 10 (6): 113 (2022)
Version
Final published version
Abstract
The East Asian VLBI Network (EAVN) is an international VLBI facility in East Asia and is operated under mutual collaboration between East Asian countries, as well as part of Southeast Asian and European countries. EAVN currently consists of 16 radio telescopes and three correlators located in China, Japan, and Korea, and is operated mainly at three frequency bands, 6.7, 22, and 43 GHz with the longest baseline length of 5078 km, resulting in the highest angular resolution of 0.28 milliarcseconds at 43 GHz. One of distinct capabilities of EAVN is multi-frequency simultaneous data reception at nine telescopes, which enable us to employ the frequency phase transfer technique to obtain better sensitivity at higher observing frequencies. EAVN started its open-use program in the second half of 2018, providing a total observing time of more than 1100 h in a year. EAVN fills geographical gap in global VLBI array, resulting in enabling us to conduct contiguous high-resolution VLBI observations. EAVN has produced various scientific accomplishments especially in observations toward active galactic nuclei, evolved stars, and star-forming regions. These activities motivate us to initiate launch of the ’Global VLBI Alliance’ to provide an opportunity of VLBI observation with the longest baselines on the earth.
MIT Department
Haystack Observatory
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Creative Commons Attribution
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DOI of Published Version
https://doi.org/10.3390/galaxies10060113
