GCN Circular 22787
Subject
GRB 180614A: Swift/UVOT Upper Limits
Date
2018-06-15T17:20:41Z (6 years ago)
From
Jeffrey Gropp at PSU <jdg44@psu.edu>
J. D. Gropp (PSU) reports on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 180614A
65s after the BAT trigger (Gropp et al., GCN Circ. 22780).
No optical afterglow consistent with the enhanced XRT position
(Gropp et al. GCN Circ. 22780)
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
b 556 1872 136 >19.63
uvm2 654 1797 136 >18.91
u 300 1847 362 >20.06
v 630 1773 136 >18.75
uvw1 679 1823 136 >19.03
uvw2 605 1922 155 >19.20
white 87 1897 430 >21.15
white_FC 87 237 147 >20.75
The magnitudes in the table are not corrected for the Galactic extinction
due to the reddening of E(B-V) = 0.14 in the direction of the burst
(Schlegel et al. 1998).