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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


August 9, 2022 Press Release
Very Fast Optical Flashes from Red Dwarfs Revealed by Video Observations
Video observations by Tomo-e Gozen have discovered 22 very fast and powerful optical flares from red dwarfs, which have been difficult to be detected. Such very fast and powerful flares are likely to be produced by instantaneous energy release of strong magnetic fields, potentially giving an impact on planetary habitability around red dwarfs.
July 13, 2022 Press Release
Fast rotations of near-Earth asteroids revealed by video observations
Tomo-e Gozen carried out video observations of 60 tiny (diameter less than 100 m) near-Earth asteroids (NEAs) and successfully derived rotational periods and axial ratios of 32 NEAs. The distribution of the tiny NEAs in a diameter and rotational period (D-P) diagram is truncated around a period of 10 s. The dependence of the tangential YORP effect on the rotational period potentially explains the observed pattern in the D-P diagram.
May 18, 2022 Press Release
Detection of Highly Correlated Optical and X-ray Time Variations in SS Cygni
Tomo-e Gozen and the X-ray telescope NICER on the International Space Station carried out simultaneous high-speed observations of the dwarf nova SS Cyg. Highly correlated optical and X-ray variations and optical lags ranging from 0.3 to 3.1 s were successfully detected.
Dec 9, 2021 Press Release
Researchers capture the fastest optical flash emitted from a newborn supernova
A team of astronomers consisting of researchers from the University of Tokyo, Kyoto University, Hiroshima University, and other institutions has discovered the fastest optical flash of a Type Ia supernova with the Tomo-e Gozen camera on the Kiso Schmidt telescope, reports a study in the Astrophysical Journal Letters published on December 8.