GCN Circular 15844
Subject
GRB 140215A: P60 observations
Date
2014-02-15T11:03:31Z (10 years ago)
From
Daniel Perley at Caltech <dperley@astro.caltech.edu>
D. A. Perley (Caltech) and S. B. Cenko (NASA-GSFC) report:
The Swift-BAT alert for GRB 140215A (Markwardt et al., GCN 15837)
automatically triggered the Palomar 60-inch telescope, which slewed to
the position and began started a sequence of r, i, and z images
beginning at 04:09:54 UT, 2.74 minutes after the initial trigger. The
optical afterglow is well-detected in all images and filters, and
follow-up has continued through to the present time. The afterglow
light curve fades as a simple unbroken power-law with a decay index of
alpha=1.19 throughout this period. Calibrating relative to USNO-B1.0,
we estimate a magnitude (in the most recent imaging, at 387 minutes
post-trigger) of R = 19.93 +/- 0.13 mag.
Spectroscopic follow-up is encouraged.