GCN Circular 19640
Subject
GRB 160625B: LCOGT FTN observations
Event
Date
2016-07-01T16:43:58Z (10 years ago)
From
Cristiano Guidorzi at Ferrara U,Italy <guidorzi@fe.infn.it>
C. Guidorzi (U. Ferrara), S. Kobayashi (LJMU), C.G. Mundell (U. Bath),
A. Gomboc (U. Nova Gorica), on behalf of a large collaboration report:
We observed Fermi GRB 160625B (Dirirsa et al. GCN 19580) with the 2-m
LCOGT Faulkes Telescope North in Hawaii on July 01 from 11:12 UT to
12:46 UT with the SDSS-r filter for a total exposure of 1500 s. We
clearly detect the optical afterglow (Troja et al. GCN 19588; Oates et
al. GCN 19589; Kuroda et al. GCN 19599; Xu et al. GCN 19600; D'Elia et
al. GCN 19601; Karpov et al. GCN 19603; Mazaeva et al. GCN 19605;
Moskvitin et al. GCN 19611; Gorbovskoy et al. GCN 19612; Batsch et al.
GCN 19615; Cobb et al. GCN 19616) with a magnitude of r=21.15 +- 0.15
mag at a mid epoch of 5.5 days post burst, as calibrated against nearby
USNOB1 stars.