GCN Circular 7323
Subject
Swift/UVOT observations of GRB080218B
Event
Date
2008-02-19T08:25:39Z (18 years ago)
From
Patricia Schady at MSSL/Swift <ps@mssl.ucl.ac.uk>
P. Schady (MSSL-UCL) reports on behalf of the Swift-UVOT team
The Swift-UVOT observed the field of GRB080218B starting 551 s after the
BAT trigger (Schady et al., GCN 7314). No new source is detected within
the refined XRT error circle (Osborne et al., GCN 7320) in any of the UVOT
co-added observations down to the following 3-sigma upper limits:
Filter Tmid (s) Exp (s) Upper Limit
wh 4178 420 > 21.09
v 2955 494 > 19.87
b 4126 283 > 20.24
u 4098 294 > 19.98
uvw1 3984 294 > 19.77
uvm2 3868 313 > 19.67
uvw2 6056 281 > 19.91
where Tmid is the weighted mid time of the co-added observations. The
values quoted above are not corrected for the expected Galactic extinction
corresponding to a reddening of E(B-V)= 0.17 mag in the direction of the
burst (Schlegel et al. 1998),