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No Microwave Flare of Sagittarius A* around the G2 Periastron Passing
Masato Tsuboi, Yoshiharu Asaki, Osamu Kameya +11
In order to explore any change caused by the G2 cloud approaching, we have monitored the flux density of Sgr A* at 22 GHz from Feb. 2013 to Aug. 2014 with a sub-array of Japanese V…
Phase Characteristics of the ALMA 3 km Baseline Data
Satoki Matsushita, Yoshiharu Asaki, Ryohei Kawabe +3
We present the phase characteristics study of the Atacama Large Millimeter/submillimeter Array (ALMA) long (up to 3 km) baseline, which is the longest baseline tested so far using…
Distance and proper motion measurement of water masers in Shapless 269 IRS 2w
Yoshiharu Asaki, Hiroshi Imai, Andrej Mikhailovich Sobolev +1
We present astrometric analysis of archival data of water masers in the star-forming region Sharpless 269 (S269) IRS 2w, observed with the VLBI Exploration of Radio Astrometry. An…