[vsnet-grb-info 18205] GRB 160703A: MITSuME Ishigakijima Optical Observation

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  19653
SUBJECT: GRB 160703A: MITSuME Ishigakijima Optical Observation
DATE:    16/07/05 01:03:31 GMT
FROM:    Daisuke Kuroda at OAO/NAOJ  <dikuroda at oao.nao.ac.jp>

D. Kuroda (OAO, NAOJ),  H. Hanayama, T. Miyaji, J. Watanabe (IAO, NAOJ),
K. Yanagisawa (OAO, NAOJ), S.Nagayama (NAOJ), M. Yoshida (Hiroshima),
K. Ohta (Kyoto) and N. Kawai(Tokyo Tech)
report on behalf of the MITSuME and OISTER collaboration:

We observed the field of GRB 160703A (Cenko et al., GCNC 19645)
with the optical three color (g', Rc and Ic) CCD camera attached
to the Murikabushi 1m telescope of Ishigakijima Astronomical
Observatory.

The observation started on 2016-07-03 12:12:55 UT, (~2.8 min after
the burst). We detected the previously reported afterglow
(Tachibana et al., GCNC 19652) in in all the three bands.

The photometric results of the OT are listed below.
We used GSC2.3 catalog for flux calibration.

#T0+[day]  MID-UT    T-EXP[sec] g'    g'_e  Rc    Rc_e  Ic    Ic_e
-------------------------------------------------------------------
0.00232    12:13:25      60.0   14.02 0.02  13.73 0.02  13.35 0.01
0.13017    15:17:31     540.0   19.32 0.07  18.37 0.04  18.22 0.08
-------------------------------------------------------------------
T0+ : Elapsed time after the burst [day]
T-EXP: Total Exposure time [sec]