[vsnet-grb-info 2796] GRB 060202: Swift/UVOT upper limits

[GCN Circulars]

TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  4633
SUBJECT: GRB 060202: Swift/UVOT upper limits
DATE:    06/02/02 16:44:58 GMT
FROM:    Alexander Blustin at MSSL-UCL  <ajb at mssl.ucl.ac.uk>

A. J. Blustin (UCL-MSSL), D. Fox (PSU), B. Hancock (UCL-MSSL),
T. Kennedy (UCL-MSSL), N. Gehrels (GSFC) on behalf of the
Swift/UVOT team report:

The Swift/UVOT began taking data on the field of GRB 060202 at
08:43:09 UT on 2006-02-02, 134 s after the BAT trigger (Fox et al.,
GCN 4629). No afterglow candidate is detected in summed images in
any filter within the refined XRT error circle (Morris et al., GCN 
4632) down to the following 3-sigma magnitude upper limits.

Filter  T_range(s)  Exp(s)  3sigUL(mag)
V       134-1231    449     19.6
B       355-1025    419     20.5
U       656-4847    91      19.1
UVW1    633-4840    119     18.7
UVM2    608-4816    119     19.2
UVW2    561-4768    99      19.0

These magnitudes are uncorrected for Galactic extinction;
E(B-V) = 0.047. We note that the XRT position is 19 arcseconds
away from the nearest star in the DSS.