史上最高の角度分解能を実現するスペースVLBIミッション ASTRO-G 計画

摘要

Space VLBI (very long baseline interferometry) mission, ASTRO-G, was authorized in 2006 by JAXA, aiming at thelaunch in 2012. ASTRO-G is a follow-on mission of HALCA (VSOP-2) mission in 1990s, which is the world first spaceVLBI mission, ASTRO-G will consists of a huge effective aperture with diameter of 30,000Km together with radioantennas in the ground. They will achieve the world highest angular resolution by means of 43 GHz observation. Thispaper describes the outline of ASTRO-G mission.