GCN Circular 33240
Subject
ZTF23aaarlti/AT2023avj: Assy continued optical observations
Date
2023-01-31T17:15:27Z (a year ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
N. Pankov (HSE, IKI), V. Kim (FAI, Pulkovo Observatory), A. Pozanenko
(IKI), M. Krugov (FAI), S. Belkin (IKI) report on behalf of GRB IKI FuN:
We observed the optical source ZTF23aaarlti/AT2023avj (Wang et al., GCN
33226) with AZT-20 telescope of Assy-Turgen observatory starting on
2023-01-28 (UT) 13:40:30.
We clearly detect the optical source (Wang et al., GCN 33226; Pankov et
al., GCN 33227) which is also detected in radio (Perley et al., GCN
33233) and in X-ray (Ho et al., GCN 33238).
Preliminary photometry of the optical afterglow in a stacked image is
following
Date UT start MJD Exp. Filter OT Err. UL(3sigma)
(mid, days) (s)
2023-01-28 13:40:30 59972.5698 90*60 r'(AB) 23.10 0.15 24.1
The photometry is based on nearby PS1 stars.