GCN Circular 11190
Subject
GRB 100901A: Kanata Telescope observation of the optical afterglow
Event
Date
2010-09-03T06:03:58Z (16 years ago)
From
Michitoshi Yoshida at Okayama Astrophysical Obs <yoshida@oao.nao.ac.jp>
M. Yoshida, M. Sasada, T. Komatsu and K. S. Kawabata (HASC, Hiroshima
University)
We performed R band imaging observation of the optical afterglow of
GRB 100901A (Immler et al., GCN 11159) with the 1.5m Kanata telescope
of Hiroshima University.
The observation was made from 2010-09-02 15:07:24 UT (~1.06 day after
the burst) to 15:50:33 UT. The previously reported afterglow (e.g
Immler et al. GCN 11159; Kuroda et al. GCN 11172; or Kann et al.
GCN 11187) was clearly detected. The afterglow showed a marginal
increasing trend in brightness within this observation.
Photometric results of the afterglow are listed below. We used USNO-
B1.0 1127-0027231 (R = 15.37) for flux calibration.
#T0+[day] MID-UT T-EXP[sec] Rc err
-----------------------------------------------
1.070266 15:15:21 900.0 18.62 0.10
1.081620 15:31:42 900.0 18.60 0.07
1.096759 15:53:30 900.0 18.54 0.04
-----------------------------------------------
T0+ : Elapsed time after the burst [day]
T-EXP: Total Exposure time [sec]