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Institute of Astronomy
The University of Tokyo

  • Education and research building of IoA

  • TAO base facility

  • Southern Sky from TAO

  • Kiso Observatory, 105cm Schmidt telescope dome

  • Andes Mountains seen from TAO


Nov 11, 2020 Press Release
Weighing space dust with radar
Researchers give radar new abilities using optical data about meteors
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.
Mar 27, 2020 Press Release
ALMA Resolves Gas Impacted by Young Jets from Supermassive Black Hole
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.
Nov 21, 2019 Press Release
Eggs of stars sleeping in Cygnus region, the largest cradle in Milky Way
The research group has successfully found 174 high-density clumps: "the eggs" of stars or stellar clusters.
Sep 30, 2019 Press Release
UTokyo starts a full operation of Tomo-e Gozen
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.