GCN Circular 16143
Subject
GRB 140423A: optical afterglow candidate
Event
Date
2014-04-23T09:32:14Z (12 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
L. Elenin (KIAM), A. Volnova (IKI), I. Molotov (KIAM), A. Pozanenko (IKI)
report on behalf of larger GRB follow-up collaboration:
We observed of the field of the Swift GRB 140423A (Sonbas et al., GCN
16142) with 0.4-m telescope of ISON-NM observatory starting
on Mar., 20 (UT) 09:01:03. The start of observation was delayed due to bad
weather. We took unfiltered images of 30 s exposures. We detect a fading
optical source in coordinates
(J2000) 13 09 08.50 +49 50 29.4
(with initial accuracy of about 1 arcsec). Preliminary photometry of the
source in the first images is ~ 17.2m. the photometry is based on nearby
USNO-B1.0 stars (R2 mag). Since the source is absent in USNO-B1.0 catalog
and clearly fading we suggest it as GRB 140423A afterglow candidate.
[GCN OPS NOTE(23apr14): Please see 16148 for the correction on the start date.
Also added the "A" on the GRB name in the first and last sentences.]