천문학회보 (The Bulletin of The Korean Astronomical Society)
- 제40권1호
- /
- Pages.54.2-54.2
- /
- 2015
- /
- 1226-2692(pISSN)
VLBI Phase Referencing and Astrometry with KVN and KaVA
- Jung, Taehyun (Korea Astronomy & Space Science Institute) ;
-
Byun, Do-Young
(Korea Astronomy & Space Science Institute) ;
- Sohn, Bong Won (Korea Astronomy & Space Science Institute)
- 발행 : 2015.04.10
초록
Phase referencing is an important tool to study weak radio sources, especially in mm-VLBI (Very Long Baseline Interferometry) which are usually too faint to be observed using conventional VLBI. VLBI astrometry is a unique method to measure the position and to identify radio emitting regions of a radio source with unprecedented angular resolution. In order to evaluate the phase referencing and astrometric capabilities of KVN and KaVA, several observations have been conducted and analyzed. I will present the observational results and discuss constraints and requirements for high precision VLBI astrometry.
키워드