GCN Circular 4674
Subject
GRB060204B: Swift/UVOT refined analysis
Date
2006-02-05T06:56:16Z (18 years ago)
From
Antonino Cucchiara at PSU <cucchiara@astro.psu.edu>
A.Cucchiara, A Falcone, S. Hunsberger (PSU),F. Marshall (GSFC),
P. Boyd (GSFC-UMBC), N. Gehrels (GSFC), on behalf of
the Swift UVOT team.
The Swift/UVOT began taking data on the field of GRB 060204B at
14:34:24 UT on 2006-02-04, 101 s after the BAT trigger (Falcone et al.,
GCN 4655). We detected an uncatalogued object cosistent with
the xrt position reported by Falcone et al. (GCN 4669)
and Guidorzi et al. (GCN 4661) in our first 200 exposure V image.
We have no afterglow detection in summed images in
any other filter within the refined XRT error circle down to the
following 3-sigma magnitude upper limits.
Filter T_range(s) Exp(s) mag coadd
V 101-301 200 19.43+/- 0.50 N
B 307-703 396 >20.12 Y
U 4086-4890 91 >19.66 Y
UVW1 4062-4746 98 >18.90 Y
UVM2 4020-4722 95 >18.98 Y
UVW2 427-4237 97 >19.11 Y
These magnitudes are uncorrected for Galactic extinction;
E(B-V) = 0.018.
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