GCN Circular 15065
Subject
GRB 130803A: Swift/UVOT Upper Limits
Event
Date
2013-08-04T02:09:13Z (13 years ago)
From
Frank Marshall at GSFC <femarsha@khamseen.gsfc.nasa.gov>
F. E. Marshall (NASA/GSFC) and K. L. Page (U. Leicester)
report on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 130803A
93 s after the BAT trigger (Page et al., GCN Circ. 15059).
No optical afterglow consistent with the enhanced XRT position
(Osborne et al. GCN Circ. 15062)
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) exposures and subsequent exposures are:
Filter T_start(s) T_stop(s) Exp(s) Mag
white_FC 93 243 147 >21.0
u_FC 305 555 246 >20.3
white 93 6186 560 >21.7
v 636 11010 1142 >20.8
b 561 5981 413 >21.0
u 305 5776 639 >20.7
w1 3936 16308 788 >21.4
m2 5167 11916 1082 >21.2
w2 4757 6392 393 >20.9
The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.05 in the direction of the burst