GCN Circular 18244
Subject
GRB 150818A: TSHAO and SAO RAS optical observations
Event
Date
2015-09-07T09:29:09Z (10 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
E. Mazaeva (IKI), A. Moskvitin (SAO RAS), I. Reva (Fesenkov
Astrophysical Institute), A. Kusakin (Fesenkov Astrophysical
Institute), A. Volnova (IKI), A. Pozanenko (IKI) report on behalf of
larger GRB follow-up collaboration:
We are continuing observations the field of Swift GRB 150818A (D'Elia et
al., GCNC 18152) with Zeiss-1000 1-m telescope of Tien Shan
Astronomical Observatory and Zeiss-1000, 1-m telescope of SAO RAS. The
optical transient (Marshall et al. GCN 18155; McCauley et al. GCN 18161;
Mazaeva et al. GCN 18175; Sanchez-Ramirez et al. GCN 18177; Mazaeva et
al. GCN 18182, GCN 18189, GCN 18205; Schulze et al. GCN 18179) is
clearly visible on combined images in each epochs. The updated light
curve of Supernova (de Ugarte Postigo et al. GCN 18213; Mazaeva et al.
GCN 18205) + host galaxy (Sanchez-Ramirez et al., GCN 18177; de Ugarte
Postigo et al. GCN 18213) can be found in
http://grb.rssi.ru/GRB150818A/GRB150818A_R_lc.png
The evident maximum of SN brightness (in Rc-filter) was on ~ Sep. 1-2,
and the brightness of SN+host galaxy was R ~ 21.1 +/- 0.1 on Sep. 6 (UT)
18:00. We are grateful to V.P. Goranskiy for assistance in SAO RAS
observations.