GCN Circular 12926
Subject
GRB 120211A: Swift/UVOT Upper Limits
Event
Date
2012-02-11T19:42:47Z (14 years ago)
From
Paul Kuin at MSSL <npkuin@gmail.com>
N. P. M. Kuin (MSSL-UCL) and E. Sonbas (NASA/GSFC/
Adiyaman_Univ.) report on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 120211A
123 s after the BAT trigger (Sonbas et al., GCN Circ. 12920).
No optical afterglow consistent with the XRT enhanced position
(Goad et al., GCN Circ. 12922) 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 123 273 147 >21.1
u_FC 281 531 246 >20.9
white 123 1528 392 >21.6
v 612 1577 117 >19.7
b 537 1503 97 >20.3
u 281 1478 324 >20.9
w1 662 1626 117 >20.2
m2 637 1602 117 >20.1
w2 588 1553 117 >20.0
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).