GCN Circular 33615
Subject
GRB 230414A: Mondy optical afterglow candidate
Date
2023-04-14T17:17:45Z (a year ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
N. Pankov (HSE), E. Klunko (ISTP), A. Pozanenko (IKI), S. Belkin (IKI)
report on behalf of GRB IKI FuN:
We observed the field of Swift GRB 230414A (D'Ai et al. GCN 33612) with
AZT-33IK telescope of Mondy observatory in R-filter on
2023-04-14 starting (UT) 16:41:07. Within prompt enhanced Swift-XRT
position (Evans et al., GCN 33613) we detect fading object at the
position of (J2000) 12 04 22.60 +53 09 16.5 with an error of 0.2 arcsec
in both coordinates. Since the object is absent in DSS2 and variable we
suggest the object as an afterglow of GRB 230414A.
Preliminary photometry of first images is following
Date UT start t-T0 Exp. Filter OT Err. UL(3sigma)
(mid, days) (s)
2023-04-14 16:41:07 0.01859 1x120 R 19.2 0.2 20.0
The photometry is based on nearby USNO-B1.0 stars.