GCN Circular 18205
Subject
GRB 150818A: possible SN rise in light curve of Mondy observations
Date
2015-08-27T16:54:50Z (9 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
E. Mazaeva (IKI), E. Klunko (ISTP), A. Volnova (IKI), I. Korobtsev
(ISTP), A. Pozanenko (IKI) report on behalf of larger GRB follow-up
collaboration:
We continue observations of the Swift GRB 150818A (D'Elia et al., GCN
18152) with AZT-33IK telescope of Sayan observatory (Mondy). We
imaged optical transient (Marshall et al., GCN 18155; McCauley et al.,
GCN 18161; Schulze et al., GCN 18164; Mazaeva et al., GCN 18175) in
R-filter on Aug., 21, 22, 23, and 26. The optical transient is clearly
visible in each epochs. Preliminary light curve of the optical transient
can be found in
http://grb.rssi.ru/GRB150818A/GRB150818A_R_lc.png
(Photometry is based on USNO-B1.0 stars referenced in (Mazaeva et al.,
GCN 18175).
One can suggest that steady re-brightening of the optical transient is
related to a Supernova associated with nearby GRB 150818A (z = 0.282,
Sanchez-Ramirez et al., GCN 18177). We encourage observation for
spectroscopic SN-confirmation.
