GCN Circular 22448
Subject
GRB 180224A: AbAO optical observations
Date
2018-02-25T20:06:13Z (6 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
E. Mazaeva (IKI), A. Pozanenko (IKI), A. Volnova (IKI), R. Inasaridze
(AbAO), V. Ayvazian (AbAO), O. Kvaratskhelia (AbAO), G. Inasaridze
(AbAO), I. Molotov (KIAM), report on behalf of larger GRB follow-up
collaboration:
We observed the field of GRB 180224A (Lien et al., GCN 22442) with AS-32
(0.7m) telescope of Abastumani Observatory starting on Feb. 25 (UT)
01:07:37. The afterglow of GRB 180224A (Lien et al., GCN 22442;
Vladimirov et al., GCN 22444) is clearly detected in a stacked image.
Preliminary photometry is following.
Date UT start t-T0 Filter Exp. OT Err.
UL
(mid, days) (s)
2018-02-25 01:07:37 0.15162 CR 60*60 21.88 0.15 22.6
The photometry is based on nearby SDSS DR9 stars
SDSS_id R_Lupton
J133038.17+380528.6 17.45
J133040.16+380535.7 17.10
J133051.85+380146.4 17.91
We confirm the fast decay of the afterglow and possible host galaxy
association SDSS DR9 J133044.06+380443.0 with the afterglow source (Watson
et al., GCN 22446).