GCN Circular 14041
Subject
GRB 121202A: Swift/UVOT Upper Limits
Date
2012-12-02T19:50:51Z (11 years ago)
From
Samantha Oates at MSSL <sro@mssl.ucl.ac.uk>
S. R. Oates (MSSL-UCL) reports on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 121202A
2828 s after the BAT trigger (Oates et al., GCN Circ. 14032).
No optical afterglow consistent with the XRT position
(Evans et al. GCN Circ. 14038)
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
white_FC 2828 2978 147 >20.3
white 2828 5033 541 >21.0
v 3808 16147 1205 >20.2
b 3192 22680 1059 >20.9
u 2987 28451 2637 >21.2
w1 4218 27811 2853 >21.4
m2 4012 26905 2713 >21.5
w2 3603 31934 1549 >21.2
The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.05 in the direction of the burst
(Schlegel et al. 1998).