GCN Circular 20232
Subject
GRB 161202A: Swift/UVOT Upper Limits
Date
2016-12-03T19:45:55Z (7 years ago)
From
Mike Siegel at PSU/Swift MOC <siegel@swift.psu.edu>
M. H. Siegel (PSU) and B. Sbarufatti (INAF-OAB/PSU)
report on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 161202A
83 s after the BAT trigger (Sbarufatti et al., GCN Circ. 20227).
No optical afterglow consistent with the XRT position
(Evans et al. GCN Circ. 20228)
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 83 232 147 >21.2
white 83 4066 344 >21.5
v 4277 4477 197 >19.4
b 3661 11907 862 >20.8
u 295 10303 1027 >20.5
w1 4688 6144 217 >19.6
w2 4071 4271 197 >19.6
The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.09 in the direction of the burst
(Schlegel et al. 1998).