GCN Circular 16460
Subject
GRB 140626A: Swift/UVOT Upper Limits
Event
Date
2014-06-26T12:44:27Z (12 years ago)
From
Paul Kuin at MSSL <npkuin@gmail.com>
N. P. M. Kuin (UCL-MSSL) and J. R. Cummings (NASA/UMBC)
report on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 140626A
103 s after the BAT trigger (Cummings et al., GCN Circ. 16456).
No optical afterglow consistent with the XRT position
(Beardmore et al. GCN Circ. 16459)
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 103 253 147 >20.9
u_FC 262 511 246 >20.3
white 103 1538 392 >21.1
v 592 1590 117 >19.0
b 517 1514 97 >20.0
u 262 1489 343 >20.4
w1 642 1639 117 >19.4
m2 617 1440 39 >19.1
w2 568 1563 117 >19.9
The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.15 in the direction of the burst
(Schlegel et al. 1998).