GCN Circular 14949
Subject
GRB 130627A: Swift/UVOT Upper Limits
Event
Date
2013-06-28T21:31:12Z (13 years ago)
From
Paul Kuin at MSSL <npkuin@gmail.com>
N. P. M. Kuin and S. R. Oates (UCL-MSSL) report on behalf of the
Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 130627A
2979 s after the BAT trigger (Oates et al., GCN Circ. 14933, GCN Circ
14934).
No optical afterglow consistent with the (enhanced) XRT
position (Kennea et al. GCN Circ. 14935; Osborne et al. GCN Circ.
14945) 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 2979 3129 147 >20.5
white 2979 10701 1229 >22.1
v 3136 4772 393 >19.7
b 3956 9788 1125 >21.3
u 3751 5386 393 >20.5
w1 3546 5182 393 >20.4
m2 3341 4976 393 >20.4
w2 4367 11202 684 >21.2
The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.09 in the direction of the burst
(Schlegel et al. 1998).