GCN Circular 4136
Subject
GRB051021: Swift/UVOT Upper Limits
Event
Date
2005-10-22T17:01:06Z (20 years ago)
From
Peter Brown at PSU <pbrown@astro.psu.edu>
P. J. Brown (PSU), D. Fox (PSU), M. Trippico (GSFC-SSAI),
J. Nousek (PSU), & N. Gehrels (GSFC)
on behalf of the Swift/UVOT team report:
The Swift-UVOT began observing the field of
GRB 051021 (HETE Trigger H3947; Yoshida et al. GCN 4116)
at 2005-10-21 16:28:27, about 3 hours after the burst.
No source is detected at the position of the optical
counterpart found by Fox, McNaught, & Peterson (GCN 4120)
in any of our 6 filters down to the following 3-sigma
upper limits:
Filter T_range(hours) Exp(sec) 3sigUL
V 3.36-8.34 1988 20.2
B 5.30-6.71 1304 21.1
U 5.04-5.29 900 20.5
W1 4.79-5.04 900 20.8
M2 3.61-3.80 900 20.9
W2 3.11-6.96 1800 21.7
Where T_range is time post-trigger.