GCN Circular 15568
Subject
GRB 131202A: Swift/UVOT Upper Limits
Event
Date
2013-12-03T12:56:44Z (12 years ago)
From
Samantha Oates at MSSL <sro@mssl.ucl.ac.uk>
S. R. Oates (UCL-MSSL) and D. Kocevski (NASA/GSFC/ORAU)
report on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 131202A
117 s after the BAT trigger (Kocevski et al., GCN Circ. 15559).
No optical afterglow consistent with the XRT position
(Osborne et al., GCN Circ. 15564) 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 initial exposures are:
Filter T_start(s) T_stop(s) Exp(s) Mag
white_FC 117 267 147 >20.6
white 117 1344 363 >21.2
v 608 1231 78 >18.6
b 534 1330 78 >19.6
u_FC 277 527 246 >19.9
u 277 1305 304 >20.1
w1 657 1280 78 >19.0
m2 632 1256 78 >18.9
w2 583 1207 78 >19.3
The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.03 in the direction of the burst
(Schlegel et al. 1998).