GCN Circular 5125
Subject
GRB 060512: P60 Observations
Event
Date
2006-05-13T06:35:23Z (20 years ago)
From
S. Bradley Cenko at Caltech <cenko@srl.caltech.edu>
S. B. Cenko (Caltech) reports on behalf of a larger collaboration:
We have imaged the field of GRB060512 (Cummings et al., GCN 5117) with the
automated Palomar 60-inch Telescope. Observations consisted of 5 x 150 s
exposures taken in the Kron R band. The mean epoch of our observations
was approximately 03:50 13 May 2006 UT (~ 4.6 hrs after the burst). We
clearly detect the afterglow and measure an R-band magnitude of R ~ 20.1
(calculated with respect to the USNO-B catalog).
Comparing with the early afterglow detection reported by Mundell and
Steele (GCN 5119), we measure a decay index of alpha ~ 1.0. We note this
is slightly steeper than the value reported by Malesani et al. (GCN 5122),
although not significant enough to claim a break in the light curve.
Further observations are underway.