Image (JPEG 129KB)
Caption (TEXT) |
Object Name: Gamma-Ray Burst GRB000301C
Telescope: Subaru Telescope / Cassegrain
Focus
Instrument: IRCS
Filter: J(1.25micron), H(1.65micron),
K'(2.12micron)
Color: Blue (J), Green (H), Red (K')
Date: UT2000 March 3
Exposure: JHK' 18min each
Field of View: about 1.5 arcmins
Orientation: North to the top, East
to the left
Position: RA(J2000.0)=16h20m18.6s,
Dec(J2000.0)=+29d26m36s (Corona Borealis) |
Explanation:
The Subaru Telescope with IRCS
attached to the
Cassegrain focus made observations of the optical
transient (OT) of Gamma-Ray Burst GRB000301C. Gamma-Ray
Bursts (GRBs for short) are a phenomenon in which a huge
amount of energy is released as gamma ray (wavelength
< 0.1 nanometer) in a matter of seconds. GRBs were
first discovered about 30 years ago but their physical
nature has not yet been determined.
Subaru's prompt follow-up provided the
first precise near-infrared photometric data for this object.
Our results were reported as the GRB Coordinates Network
(Note) Circular GCNC 577,
587
(http://gcn.gsfc.nasa.gov/gcn/gcn3_archive.html)
and have been cited by a number of scientific papers being
submitted. Astronomers believe that by studying the way
in which the optical transients of GRBs fade it will be
possible to better understand them.
(Note) :The GRB Coordinates Network: please
refer to http://gcn.gsfc.nasa.gov/gcn/gcn_main.html.
May 4, 2000 |
