The research team lead by Ryou Ohsawa (the University of Tokyo) successfully observed 228 faint meteors by radar and in optical simultaneously with Tomo-e Gozen, a wide-field CMOS camera, and the MU radar, one of the largest atmosphere radars. The team first presented a statistically-reliable relationship between the radar cross section and the optical brightness and a method to estimate the meteoroid mass from radar observations. The team estimated that the amount of interplanetary dust falling onto the Earth as faint meteors is about 1,000 kg a day.
Astronomers obtained the first resolved image of disturbed gaseous clouds in a galaxy 11 billion light-years away by using the Atacama Large Millimeter/submillimeter Array (ALMA). The team led by Kaiki Inoue (Kindai University) and Takeo Minezaki (the University of Tokyo) found that the disruption is caused by young powerful jets ejected from a supermassive black hole residing at the center of the host galaxy.
The Tomo-e Gozen system has been being developed for the 105-cm Kiso Schmidt telescope by mainly Kiso Observatory, Institute of Astronomy, School of Science, the University of Tokyo since 2014, and finally completed. The University of Tokyo starts a full operation of Tomo-e Gozen in October 2019.