GCN Circular 18684
Subject
GRB 151210A: Swift/UVOT Upper Limits
Date
2015-12-10T15:12:29Z (9 years ago)
From
Samantha Oates at MSSL <sro@mssl.ucl.ac.uk>
S. R. Oates (IAA-CSIC/UCL-MSSL) and P. A. Evans (U Leicester)
report on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 151210A
153 s after the BAT trigger (Evans et al., GCN Circ. 18678).
No optical afterglow consistent with the optical position
(Han et al., GCN Circ. 18679; Wiseman et al. GCN Circ. 18680)
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 153 302 147 >21.1
u_FC 311 560 246 >20.5
white 153 7227 805 >22.1
v 640 7549 442 >20.3
b 566 7023 510 >20.9
u 311 6817 736 >20.8
w1 690 6613 313 >20.4
m2 840 6407 235 >19.8
w2 616 7433 490 >20.7
The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.12 in the direction of the burst
(Schlegel et al. 1998).