GCN Circular 12654
Subject
GRB 111210A: Swift/UVOT Upper Limits
Date
2011-12-10T22:03:51Z (12 years ago)
From
Mike Siegel at PSU/Swift MOC <siegel@swift.psu.edu>
M. H. Siegel (PSU) reports on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 111210A
65 s after the BAT trigger (Siegel et al., GCN Circ. 12650).
No optical afterglow consistent with the XRT position (Goad et al.,
GCN Circ. 12652) 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) 65 214 147 >20.3
u (FC) 276 526 246 >19.5
white 65 6160 569 >20.5
v 606 6570 471 >19.3
b 532 7315 397 >20.0
u 276 7185 659 >19.9
uvw1 657 6980 471 >20.1
uvm2 1062 1082 19 >18.1
uvw2 582 6365 216 >20.5
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).