GCN Circular 15761
Subject
GRB 140129A: P60 optical afterglow detection
Date
2014-01-29T04:15:45Z (10 years ago)
From
Daniel Perley at Caltech <dperley@astro.caltech.edu>
D. A. Perley (Caltech) and S. B. Cenko (NASA/GSFC) report on behalf of a
larger calibration:
The Palomar 60-inch telescope automatically responded to the Swift
trigger for GRB 140129A (Melandri et al., GCN 15760) and began taking
images at 03:27:37.8 UT, about 3.6 minutes post-GRB trigger.
We detect a bright source, not present in USNO B1.0, at the following
location consistent with the Swift XRT and UVOT error circles:
RA = 02:31:33.78
dec = -01:35:42.88
(J2000)
The source is detected in r, i, and z filters, and fades rapidly from
r=16.29 to r=19.44 between UT 03:28 and 04:07.