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Institute of Astronomy
The University of Tokyo



Dec 2, 2020 Press Release
Astronomical instrument hunts for ancient metal
A new study looks at quasars to explore the origin of the iron in your blood
Hiroaki Sameshima (The University of Tokyo) and his research group have observed quasars using WINERED, a spectrograph jointly developed by The University of Tokyo and Kyoto Sangyo University, and succeeded in quantitatively estimating how much iron and magnesium were present in the universe about 10 billion years ago.
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.