GCN Circular 19187
Subject
GRB 160314A: Swift/UVOT Detection
Date
2016-03-14T19:04:28Z (9 years ago)
From
Mike Siegel at PSU/Swift MOC <siegel@swift.psu.edu>
M. H. Siegel (PSU) and V. D'Elia (ASDC)
report on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 160314A
151 s after the BAT trigger (D'Elia et al., GCN Circ. 19182).
A source consistent with the XRT position
(Osborne et al. GCN Circ. 19185)
is detected in the initial UVOT exposures.
The preliminary UVOT position is:
RA (J2000) = 07:31:09.73 = 112.79053 (deg.)
Dec (J2000) = +16:59:59.1 = 16.99974 (deg.)
with an estimated uncertainty of 0.63 arc sec. (radius, 90% confidence).
Preliminary detections and 3-sigma upper limits using the UVOT photometric system
(Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the early exposures are:
Filter T_start(s) T_stop(s) Exp(s) Mag
v 457 1825 175 >19.6
b 407 1775 175 >19.6
u 151 401 246 19.14 +/- 0.16
w1 506 1726 156 >18.8
m2 481 1849 174 >19.2
w2 432 1801 175 >19.3
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).