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GCN Circular 827

Subject
GRB000926 - Optical observations
Date
2000-10-02T22:09:20Z (24 years ago)
From
Christian Veillet at CFHT <veillet@cfht.hawaii.edu>
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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 fourth night.

One 600s exposure has been obtained with a decent seeing
(0.7"). Using the new R magnitude of 17.06 by Halpern et al.
(GCN #824) for the reference star, the R magnitude of
the GRB is found as:

Oct. 02.2626  R = 22.82 +/- 0.08

The last two days of data from Halpern et al. (GCN #284),
Fynbo et al. (GCN #825), and the previous CFHT measurement
(GCN #826) suggest a new decay phase with a decay rate
of 1.47 +/- 0.10 .

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.


-- 
************************************************************
Dr. Christian Veillet,       CFHT Senior Resident Astronomer
Phone: (808) 885-3161   http://www.cfht.hawaii.edu/~veillet/
************************************************************
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