Kim Jaeheon(Dept. of Astronomy and Space Science, Kyung Hee University/Korean VLBI Network, Korea Astronomy and Space Science Institute/Yonsei Astronomical Observatory, Yonsei University)
Cho Se-Hyung(Korean VLBI Network, Korea Astronomy and Space Science Institute/Dept. of Astronomy and Space Science, Yonsei University)
Kim Sang-Joon(Dept. of Astronomy and Space Science, Kyung Hee University)