Subaru telescope detects clues for understanding the origin of
mysterious dark gamma-ray bursts The results open the
possibility that dark gamma-ray bursts may spring from high-
metallicty environments. July 23, 2010 Provided by the Subaru
Telescope Facility, Hilo, Hawaii July 23, 2010 Afterglow of the
dark GRB and its host galaxy taken with the Subaru Telescope's
Multi-Object Infrared Camera and Spectrograph (MOIRCS). Image
(a) was taken 9 hours after the burst. Image (b) was taken 34
hours after the burst. The afterglow seen at the upper edge of
the host galaxy in (a) faded out in (b). Image (c) shows the
afterglow after image (b) is subtracted from image (a). A green
circle in (a) shows the uncertainty of the position of the X-ray
afterglow. Photo by Copyright Subaru Telescope A research team
led by astronomers from Kyoto University, Tokyo Institute of
Technology, and the National Astronomical Observatory of Japan
used the Subaru Telescope to observe a dark gamma-ray burst
(GRB) that provides clues for unde