GCN Circular 7916
Subject
GRB 080701A: Swift/UVOT Upper Limits
Event
Date
2008-07-01T22:11:42Z (18 years ago)
From
Frank Marshall at GSFC <marshall@milkyway.gsfc.nasa.gov>
F.E. Marshall (NASA/GSFC) and M.C. Stroh (PSU)
report on behalf of the Swift/UVOT team:
The Swift/UVOT observed the field of GRB 080701A starting 2983 s after
the BAT trigger (Stroh et al., GCN Circ. 7910). We do not find a source
in any of the UVOT observations inside the enhanced XRT error circle
(Evans et al., GCN Circ. 7914). The 3-sigma upper limits for detecting
a source in the first finding chart (FC) exposure and co-added frames are:
Filter T_start(s) T_stop(s) Exp(s) Mag (3-sigma UL)
white (FC) 2983 3082 98 >19.7
white 2983 9403 736 >21.0
v 3914 4113 197 >19.1
b 3298 4934 393 >20.2
u 3093 4728 393 >19.9
uvw1 4324 4523 197 >20.0
uvm2 4119 4318 197 >19.6
uvw2 3709 3908 197 >20.2
The values quoted above are not corrected for the expected Galactic
extinction corresponding to a reddening of E(B-V) = 0.54 mag in
the direction of the burst (Schlegel et al. 1998).