GCN Circular 2982
Subject
GRB050124: No Swift UVOT Detection of Afterglow Emission
Date
2005-01-26T03:10:48Z (20 years ago)
From
Pete Roming at PSU <roming@astro.psu.edu>
S. Hunsberger (PSU), A. Breeveld (MSSL), P. Roming (PSU), K. Mason, P. Schady
(MSSL), M. Ivanushkina (PSU), K. McGowan, T. Poole (MSSL), C. Gronwall (PSU),
M. De Pasquale, A. Blustin (MSSL), P. Brown (PSU), S. Rosen, C. James (MSSL),
P. Boyd, S. T. Holland, M. Still, W. Landsman (GSFC), P. Smith, B. Hancock
(MSSL), S. Koch (PSU), M. Carter, H. Huckle (MSSL), P. Broos (PSU), T. Kennedy
(MSSL), S. Barthelmy (GSFC), D. Burrows, J. Nousek, M. Chester (PSU), N.
Gehrels (GSFC), K. Hurley (UCB), G. Chincarini (OAB) on behalf of the Swift
UVOT team.
The Swift Ultra-Violet/Optical Telescope (UVOT) began observations of GRB050124
(GCN 2972) on January 24, 2005, at 14:34:56 UT. The spacecraft did not
autonomously slew to the burst since automated slewing was not enabled. The
observation was performed as a Target of Opportunity beginning about 3 hours
after the burst. Based on comparisons to the USNO-B1.0 Catalogue, we detect no
source down to a magnitude of 17.4 in the V-filter for a 100 second UVOT Finding
Chart exposure. We caution that the instrument is not yet fully
calibrated and that this magnitude limit is an estimate.