GCN Circular 4177
Subject
GRB051028: Swift/UVOT upper limits
Date
2005-10-29T15:16:45Z (19 years ago)
From
Alexander Blustin at MSSL-UCL <ajb@mssl.ucl.ac.uk>
A. J. Blustin, M. J. Page, M. De Pasquale, S. R. Oates (UCL-MSSL),
K. Hurley (Berkeley), M. Chester (PSU), N. Gehrels (GSFC) report
on behalf of the Swift/UVOT team:
The Swift/UVOT began observing the field of GRB 051028 at
20:44:06 UT on 2005-10-28, 7.1 hours after the HETE trigger (Hurley
et al. GCN 4172). No new source (with respect to the DSS) was
detected at the XRT (Racusin et al. GCN 4174) or WHT (Jelinek et al.
GCN 4175, Pandey et al. GCN 4176) positions in summed images from
the four UVOT filters used down to the following 3-sigma upper
limits:
Filter T_range(hours) Exp(sec) 3sigUL
V 7.4-10.3 1441 20.2
W1 8.7-10.8 1700 21.1
M2 8.5-10.5 1763 21.4
W2 7.1-9.1 1456 21.4
We note that this burst is at low galactic latitude, with an
E(B-V) of 0.21 and A_v of 0.71 mag.