GCN Circular 604
Subject
GRB 000301C, Optical Observation
Date
2000-03-10T02:52:21Z (25 years ago)
From
Jules Halpern at Columbia U. <jules@astro.columbia.edu>
J. P. Halpern & J. Kemp (Columbia U.) report on behalf of
the MDM Observatory GRB follow-up team:
"We reobserved GRB 000301C in the R band on March 9.52 UT using
the MDM 1.3m telescope, measuring R = 22.28 +/- 0.09 referenced
to the comparison stars of Garnavich et al. (GCN #573). Seeing
was 1."4. If we restrict our attention to those GCN reported
magnitudes that have error bars less than or equal to 0.1 mag,
then the light curve is reasonably well described by a power-law
decay of alpha = -0.90 +/- 0.04 until 4 days after the burst,
followed by a power-law decay of alpha = -1.93 +/- 0.12.
An updated decay curve and a new CCD image are posted at
http://www.astro.bio2.edu/grb/000301Ca
This message may be cited."