Proceedings of the International Astronomical Union 9(S303) 382-384 2014年5月
We have been monitoring the flux density of Sagittarius A* (Sgr A*) at 22 GHz since DOY=42 (11 Feb. 2013) with a sub-array of the Japanese VLBI Network in order to search the increase of 22-GHz emission from Sgr A* induced by the interaction of th...
GALACTIC CENTER: FEEDING AND FEEDBACK IN A NORMAL GALACTIC NUCLEUS 9(303) 188-190 2014年
We present results from a high-resolution wide-field imaging observation of the central molecular zone (CMZ) in (HCO+)-C-13 J = (1 - 0) and SiO v = 0, J = (2 - 1) emission lines by using the Nobeyama 45-m telescope in order to depict the high-dens...
Publications of the Astronomical Society of Japan 66(1) 2014年 [査読有り]
A compact gas cloud G2 is predicted to reach the pericenter of its orbit around the supermassive black hole (SMBH) of our Galaxy, Sagittarius A*. This event will give us a rare opportunity to observe the interaction between the SMBH and the gas ar...
Publications of the Astronomical Society of Japan 65(3) 2013年6月 [査読有り]
We performed observations of the flux densities of SgrA* at 90 and 102 GHz in order to detect any time lag between these frequencies using the Nobeyama Millimeter Array, which was previously reported at lower frequencies. We detected a radio flare...