GCN Circular 15295
Subject
GRB 131002B: Swift/UVOT Upper Limits
Date
2013-10-03T13:03:10Z (11 years ago)
From
Alice Breeveld at MSSL-UCL <a.breeveld@ucl.ac.uk>
A. A. Breeveld (UCL-MSSL) and M. C. Stroh (PSU) report on behalf of the
Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 131002B
62 s after the BAT trigger (Stroh et al., GCN Circ. 15284).
No optical afterglow consistent with the XRT position (Beardmore et al.
GCN Circ. 15291) is detected in the initial UVOT exposures. There is a
DSS source lying just on the edge of the XRT region at 05:00:29.386
-75:42:07.58.
Preliminary 3-sigma upper limits using the UVOT photometric system
(Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the first finding
chart (FC) exposure and subsequent exposures are:
Filter T_start(s) T_stop(s) Exp(s) Mag
white_FC 62 212 147 >21.8
white 5216 5416 197 >22.1
v 5627 5826 197 >20.3
b 5011 6512 260 >21.4
u 275 6442 274 >21.0
w1 6037 6237 197 >20.4
m2 5832 6031 197 >20.1
w2 5422 5622 197 >20.5
The magnitudes in the table are not corrected for the Galactic
extinction due to the reddening of E(B-V) = 0.12 in the direction of the
burst (Schlegel et al. 1998).