GCN Circular 14199
Subject
GRB 130211A: Swift/UVOT Upper Limits
Date
2013-02-11T21:58:48Z (12 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 130211A
125 s after the BAT trigger (Oates et al., GCN Circ. 14195).
No optical afterglow consistent with the optical position
(Knust et al. GCN Circ. 14196) 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 125 275 147 >21.8
white 125 17061 1076 >22.9
v 4470 22933 1646 >21.7
b 3854 16303 1278 >22.4
u 284 29091 650 >21.3
w1 4880 28760 1082 >21.8
m2 4674 27853 1175 >21.6
w2 4265 22020 1968 >22.2
The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.53 in the direction of the burst
(Schlegel et al. 1998).