[vsnet-grb-info 15761] GRB 141109A: MITSuME Ishigakijima upper limits

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  17049
SUBJECT: GRB 141109A: MITSuME Ishigakijima upper limits
DATE:    14/11/10 01:20:00 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 141109A (D'Avanzo et al., GCNC 17037)
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 2014-11-09 18:02:45.43 UT, (~12.2 h after the burst).
We could not detect the previously reported afterglow (Covino, GCNC 17039;
Xu et al., GCNC 17040; Graham et al., GCNC 17041) in all the three bands.

Three sigma upper limits of the OT are listed below.
We used SDSS catalog for flux calibration.

#T0+[day]  MID-UT    T-EXP[sec]   g'     Rc     Ic
-----------------------------------------------------
0.53718    18:43:28    3660.0   >20.9  >20.9  >20.1
-----------------------------------------------------
T0+ : Elapsed time after the burst [day]
T-EXP: Total Exposure time [sec]