GCN Circular 3631
Subject
Swift UVOT Observations of GRB 050716
Date
2005-07-16T20:24:33Z (19 years ago)
From
Katie McGowan at MSSL-UCL <km2@mssl.ucl.ac.uk>
K. McGowan (MSSL), E. Rol (U. Leicester), J. Nousek (PSU),
F. Marshall, N. Gehrels (GSFC) report on behalf of the
Swift UVOT team:
Using summed images from Swift/UVOT of the field of
GRB 050716 (Rol et al., GCN 3623), taken from 99
seconds after the BAT trigger, no new source is detected
within the XRT error circle (Hurkett et al., GCN 3630) in
any of the six filters down to the following 3-sigma
magnitude upper limits:
Filter Exposure (s) T_mid (s) 3-sig limit
V 178 487 19.1
B 979 3121 21.1
U 978 2660 20.7
UVW1 178 2200 19.7
UVM2 88 545 19.5
UVW2 755 3468 20.8
where T_mid is the mid-point of the summed observation.
We caution that the instrument is not yet fully
calibrated and that the magnitude limits presented here
may need to be refined.