[vsnet-grb-info 3568] GRB 060805: Swift/UVOT Upper Limits

[GCN Circulars]

TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  5402
SUBJECT: GRB 060805: Swift/UVOT Upper Limits
DATE:    06/08/05 16:01:09 GMT
FROM:    Shashi Pandey at MSSL  <sbp2 at mssl.ucl.ac.uk>

S. B. Pandey, M. J. Page, H.Z. Ziaeepour and S. R. Oates (UCL-MSSL)
report on behalf of the Swift/UVOT team:

The Swift/UVOT began observing the field of GRB 060805 at 04:49:25 UT,
79 s after the BAT trigger (Ziaeepour et al. GCN 5398).  No optical
afterglow candidate has been found in the coadded images within the
XRT error circle (Ziaeepour et al. GCN 5398).

The 3-sigma limiting magnitudes for the coadded images for the
7 filters are listed below:

Filter       T_range(s)  Exposure(s)     3sig_Upper limit

WHITE        96-6633       511           20.1
V            79-11779      1583          20.3
B            680-6428      412           20.6
U            656-6223      432           20.2
W1           632-6019      432           19.7
M2           4182-12507    1105          20.6
W2           708-10866     1165          20.7


T_range is calculated from the time of the burst. These
upper limits have not been corrected for the estimated
Galactic reddening of E(B-V) = 0.024 mag (Schlegel et
al. 1998).