TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  3461
SUBJECT: Swift/UVOT observation of XRF 050522
DATE:    05/05/23 19:25:45 GMT
FROM:    Alexander Blustin at MSSL-UCL  <ajb@mssl.ucl.ac.uk>

A. Blustin (MSSL), F. Marshall (NASA/GSFC), K. McGowan,
S. Rosen, A. Breeveld (MSSL), N. Gehrels (NASA/GSFC) on
behalf of the Swift UVOT team

INTEGRAL detected XRF 050522 at 06:00:21 UT on 22nd May
2005 (GCN circ 3446). The Swift observatory executed a
ToO observation of the INTEGRAL position, and the UVOT
began taking data 32879 s after the burst.

No new source is detected in the UVOT field of view
within the INTEGRAL error circle in the B, U and UVW2
filters down to the following 5-sigma upper limits:

Filter  Limit  Exp (s)  T_start  T_stop

B       19.7     170     33786    34686
U       19.9     425     32879    33779
UVW2    20.2     241     34695    34936

Where T_start and T_stop are in seconds after the burst.