GCN Circular 32396
Subject
GRB 220714B: UVOT afterglow discovery
Date
2022-07-14T18:53:03Z (2 years ago)
From
Frank Marshall at Swift/UVOT <marshall@milkyway.gsfc.nasa.gov>
F.E. Marshall (NASA/GSFC) and S. Laha (GSFC/UMBC) report on behalf of the Swift team:
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 3552 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 03:08:20.18 = 47.08409
DEC(J2000) = -19:19:45.3 = -19.32925
with a 90%-confidence error radius of about 0.61 arc sec. This position is 1.5
arc sec. from the center of the XRT error circle (Evans et al. GCN Circ. 32395). The estimated magnitude is
16.52 with a 1-sigma error of about 0.14. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.032.