[vsnet-grb-info 1763] GRB050713B :Swift/UVOT observations
GCN Circulars
gcncirc at capella.gsfc.nasa.gov
Thu Jul 14 07:19:12 JST 2005
TITLE: GCN GRB OBSERVATION REPORT
NUMBER: 3603
SUBJECT: GRB050713B :Swift/UVOT observations
DATE: 05/07/13 22:17:04 GMT
FROM: Simon Rosen at MSSL-UCL <srr at mssl.ucl.ac.uk>
S. Rosen (MSSL), S. Vaughan (Leicester), R. Fink
(GSFC-SPSYS), M. Chester (PSU) report on behalf of
the Swift UVOT team:
Using summed images from Swift/UVOT of the field of
GRB 050713B, taken from 136 seconds after the BAT
trigger, no new source is detected within the XRT
error circle (Vaughan et al., GCN 3590) 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 252 598 19.26
B 88 624 19.58
U 88 610 19.31
UVW1 88 596 19.46
UVM2 88 582 19.83
UVW2 88 639 19.87
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.
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