GCN Circular 15913
Subject
GRB 140301A: Swift/UVOT Upper Limits
Event
Date
2014-03-04T04:27:15Z (12 years ago)
From
Mike Siegel at PSU/Swift MOC <siegel@swift.psu.edu>
B. Porterfield (PSU) and R. Starling (U Leicester)
report on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 140301A
95 s after the BAT trigger (Page et al., GCN Circ. 15896).
No optical afterglow consistent with the XRT position
(Goad et al. GCN Circ. 15898)
is detected in the initial UVOT exposures.
No counterpart consistent with the optical counterpart observed by
NOT (Kruehler et al. GCN Circ. 15899) is detected.
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 108 258 292 >21.8
u_FC 320 744 265 >20.7
white 108 920 231 >21.1
v 650 843 38 >18.7
v 6583 22273 392 >20.2
b 749 769 19 >19.2
b 27968 28212 240 >21.0
u 320 744 265 >20.7
w1 700 719 19 >17.9
w1 11294 45552 1408 >21.1
w2 799 818 19 >17.8
w2 6378 58531 1122 >21.4
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).