GCN Circular 826
Subject
GRB000926 - Optical observations
Date
2000-10-01T19:34:03Z (24 years ago)
From
Christian Veillet at CFHT <veillet@cfht.hawaii.edu>
GRB000926 - Optical observations
The optical counterpart of GRB000926 has been observed using the
CFH12K CCD mosaic camera at the prime focus of the 3.6-m CFH
Telescope for the third night.
One 600s exposure has been obtained with an excellent seeing
(0.5"). Using the new R magnitude of 17.06 by Halpern et al.
(GCN #824) for the reference star, the three R magnitudes of
the GRB for our observations are:
Sept. 29.3075 R = 21.19 +/- 0.05
Sept. 30.3075 R = 22.15 +/- 0.06
Oct. 01.2593 R = 22.57 +/- 0.08
The last observation by Fynbo et al. (GCN #825) and this new
CFHT data point sugest that the GRB is no longer on the decay
reported by Fynbo et al. (GCN #820), Veillet (GCN #823) and
Halpern et al. (GCN #824). We could see a flare out as
suggested by Dar in a private communication (see also
astro-ph/0008474), though more observations would definitely
be welcome at this stage...
A new graph of the light curve in R can be found at
http://www.cfht.hawaii.edu/~veillet/grb.html
D. Kocevski, D. Donovan and G. Luppino are acknowledged for their
help in this observation.
This message may be cited.
--
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Dr. Christian Veillet, CFHT Senior Resident Astronomer
Phone: (808) 885-3161 http://www.cfht.hawaii.edu/~veillet/
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