GCN Circular 16540
Subject
GRB 140703A: Swift/UVOT Upper Limits
Date
2014-07-07T23:45:44Z (10 years ago)
From
Mike Siegel at PSU/Swift MOC <siegel@swift.psu.edu>
M. H. Siegel (PSU) and D. Kocevski (NASA/GSFC/ORAU)
report on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 140703A
123 s after the BAT trigger (Kocevski et al., GCN Circ. 16503).
No optical afterglow consistent with the XRT position
(Kocevski et al. GCN Circ. 16503)
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 123 239 114 >19.7
white 123 5830 507 >20.5
v 4606 4806 197 >19.3
b 3991 5626 393 >20.2
u 3785 5420 393 >20.1
w1 5016 5216 197 >19.7
m2 4811 5010 197 >20.2
w2 4401 6002 359 >20.7
The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.10 in the direction of the burst
(Schlegel et al. 1998).