GCN Circular 14641
Subject
GRB 130513A: Swift/UVOT Upper Limits
Date
2013-05-14T17:31:32Z (11 years ago)
From
Frank Marshall at GSFC <femarsha@khamseen.gsfc.nasa.gov>
F. E. Marshall (NASA/GSFC) reports on behalf of the Swift team:
The Swift/UVOT began settled observations of the field of GRB 130513A
25261 s after the INTEGRAL trigger (Mereghetti et al., GCN Circ. 14630).
No optical afterglow consistent with the XRT position
(Evans and Marshall GCN Circ. 14635)
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 initial exposures are:
Filter T_start(s) T_stop(s) Exp(s) Mag
white 25885 32269 1218 >21.9
v 26510 32924 1267 >20.6
u 25261 37138 1399 >21.6
The magnitudes in the table are not corrected for the Galactic
extinction
due to the reddening of E(B-V) = 0.03 in the direction of the burst
(Schlegel et al. 1998).