[vsnet-grb-info 6459] GRB 080805: Swift/UVOT Upper Limits
GCN Circulars
gcncirc at capella.gsfc.nasa.gov
Wed Aug 6 07:49:17 JST 2008
TITLE: GCN CIRCULAR
NUMBER: 8071
SUBJECT: GRB 080805: Swift/UVOT Upper Limits
DATE: 08/08/05 22:48:54 GMT
FROM: Paul Ward at MSSL <paw at mssl.ucl.ac.uk>
P. Ward (MSSL-UCL) and C. Pagani (PSU) report on behalf of
the Swift/UVOT team:
The Swift/UVOT observed the field of GRB 080805 starting 74 s after the
BAT trigger (Pagani et al., GCN Circ. 8059). We do not find a source in
any of the UVOT observations inside the XRT error circle or at the
position reported by Kruehler et al. (GCN 8060). The 3-sigma upper limits
for detecting a source are:
Filter T_start T_stop Exp Mag
White 76 175 98.5 > 20.70
White 5473 18024 1082 > 22.12
v 182 6083 332 > 19.81
b 5268 17112 1082 > 21.43
u 5061 5260 197 > 20.11
uvw1 4856 5055 197 > 19.99
uvm2 4650 6267 371 > 20.09
uvw2 5680 18053 219 > 20.12
The values quoted above are in the UVOT photometric system
(Poole et al. 2008, MNRAS, 383, 627). No correction has been
made for the expected extinction corresponding to E(B-V) of
0.043 mag in the direction of the burst (Schlegel et al. 1998).
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