REVOLUTION IN ASTRONOMY WITH ALMA: THE THIRD YEAR 499(6) 249-250 2015年
We identified a half-shell like feature with a high emission line ratio of T(SiO J = 2 - 1)/T((HCO+)-C-13 J = 1 - 0)similar to 6 - 8 and large velocity width in the Galactic Center 50 km s(-1) molecular cloud, which is conspicuous in the Sgr A reg...
A. Miyazaki   S. S. Lee   B. W. Sohn   T. Jung   M. Tsuboi   T. Tsutsumi   
Proceedings of the International Astronomical Union 9(S303) 322-323 2014年5月
We searched the time lag between the intra-day variables (IDVs) of Sagittarius A* at 22, 43, and 86 GHz bands using the Korean VLBI Network (KVN). The time lags between the IDV flare peaks at 22 and 43 GHz are reported, and they suggest that the f...
T. Tsutsumi   A. Miyazaki   M. Tsuboi   
Proceedings of the International Astronomical Union 9(S303) 385-387 2014年5月
We present the analysis of flux variations of Sgr A* at millimeter wavelengths based on the long-term monitoring project spanning over a decade using the Nobeyama Millimeter Array. We investigate basic characteristics of the flux variability using...