论文标题
东亚VLBI网络（EAVN）的观察系统和初步科学成就的概述
Overview of the Observing System and Initial Scientific Accomplishments of the East Asian VLBI Network (EAVN)
论文作者
论文摘要
东亚VLBI网络（EAVN）是东亚的国际VLBI设施，在东亚国家之间以及东南亚和欧洲国家的一部分之间在共同的合作下运营。 EAVN目前由位于中国，日本和韩国的16个射电望远镜和三个相关器组成，主要在三个频带，6.7、22和43 GHz的基线长度为5078 km的三个频段，最高的基线长度为43 GHz的最高角度分辨率为0.28 milliarcseconds。 EAVN的独特功能之一是在九个望远镜上同时进行多频率数据接收，这使我们能够采用频相传递技术在较高的观察频率下获得更好的灵敏度。 EAVN于2018年下半年开始开放式计划，每年的观察时间超过1100小时。 EAVN填补了整体VLBI阵列中的地理差距，从而使我们能够进行连续的高分辨率VLBI观测值。 EAVN产生了各种科学成就，尤其是在观察到活跃的银河核，进化的恒星和恒星形成区域中。这些活动促使我们启动“全球VLBI联盟”的推出，以提供弗比比（VLBI）观察到地球上最长的基线的机会。
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 hours 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.
