GCN Circular 16021
Subject
GRB 140320C: Swift/UVOT Upper Limits
Date
2014-03-21T13:05:13Z (10 years ago)
From
Samantha Oates at MSSL <sro@mssl.ucl.ac.uk>
S. R. Oates (UCL-MSSL) and J. K. Cannizzo (NASA/UMBC)
report on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 140320C
19435 s after the INTEGRAL trigger (Mereghetti et al., GCN Circ. 16007).
No optical afterglow consistent with the XRT position
(Pagani et al., GCN Circ. 16015; 16017) 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 20211 32984 1056 >22.1
v 20986 33302 1087 >20.5
u 19435 37277 1741 >21.4
The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.07 in the direction of the burst
(Schlegel et al. 1998).