GCN Circular 19696
Subject
GRB 160712A: Swift/UVOT Upper Limits
Date
2016-07-13T18:19:55Z (8 years ago)
From
Lea Hagen at PSU <lea.zernow.hagen@gmail.com>
L. M. Z. Hagen (PSU) reports on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 160712A
3998 s after the BAT trigger (Hagen et al., GCN Circ. 19684). No
optical afterglow consistent with the XRT position (Beardmore et al.,
GCN Circ. 19690) or the possible optical afterglow candidate (Kruehler
et al., GCN Circ. 19693; Troja et al., GCN Circ. 19695) 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 exposures are:
Filter T_start(s) T_stop(s) Exp(s) Mag
white 3998 4148 147 >20.47
v 4154 4354 196 >19.04
b 4974 5027 52 >19.17
u 4769 4969 196 >19.66
uvw1 4564 4764 196 >19.58
uvm2 4359 4559 196 >19.52
The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.08 in the direction of the burst
(Schlegel et al. 1998).