GCN Circular 19496
Subject
GRB 160601A: Swift/UVOT Upper Limits
Event
Date
2016-06-03T15:28:24Z (10 years ago)
From
Mike Siegel at PSU/Swift MOC <siegel@swift.psu.edu>
S. Sebzda (Penn State/Swift) and D. Kocevski (NASA/GSFC/ORAU)
report on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 160601A
78 s after the BAT trigger (Kocevski et al., GCN Circ. 19478).
No optical afterglow consistent with the XRT position
(Evans et al. GCN Circ. 19484) 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) 78 227 147 >21.00
white 78 589 166 >20.90
v 619 639 19 >17.30
b 544 564 19 >18.32
u (fc) 289 539 491 >20.19
uvw1 668 688 19 >17.72
uvm2 643 663 19 >17.46
uvw2 595 615 19 >17.87
The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.02 in the direction of the burst
(Schlegel et al. 1998).