GCN Circular 15633
Subject
GRB 131229A: Swift/UVOT Upper Limits
Date
2013-12-29T18:18:09Z (10 years ago)
From
Massimiliano de Pasquale at MSSL-UCL <m.depasquale@ucl.ac.uk>
M. De Pasquale (UCL-MSSL) and M. J. Page (UCL-MSSL)
report on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB131229A
159 s after the BAT trigger (Page et al., GCN Circ. 15627).
No optical afterglow consistent with the XRT enhanced position
(Evans et al. GCN Circ. 15631) is detected in the initial UVOT exposures.
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
u_FC 159 408 246 >19.9
u 159 6481 639 >20.4
v 4434 18141 1889 >20.6
b 4023 16459 2164 >21.6
w1 4844 6275 393 >19.8
w2 4230 17366 1279 >20.5
The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.29 in the direction of the burst
(Schlegel et al. 1998).