GCN Circular 23408
Subject
GRB 181103A: MITSuME Okayama optical upper limits
Date
2018-11-05T04:35:48Z (6 years ago)
From
Katsuhiro L. Murata at Nagoya U <murata@u.phys.nagoya-u.ac.jp>
K. L. Murata, R. Itoh, Y. Tachibana, S. Harita, K. Morita, K. Shiraishi, K.
Iida, M. Oeda, M. Niwano, R. Adachi, Y. Yatsu, and N. Kawai (Tokyo Tech)
report on behalf of the MITSuME collaboration:
We searched for the optical counterpart of GRB 181103A (A. Tohuvavohu et
al., GCN Circular #23402) with the optical three color (g', Rc, and Ic) CCD
cameras attached to the MITSuME 50 cm telescope of Okayama Astrophysical
Observatory, Japan.
The observation started on 19:38:58 UT. We did not find any new point
source within enhanced XRT circle (P.A. Evans et al., GCN Circular #23403)
in all three bands. We obtained following limits for the magnitudes.
T0+[hour] MID-UT T-EXP[sec] g' Rc Ic
-------------------------------------------------------------------------------------------------------
15.352 20:15:29 3240 >18.5 >18.0 >17.5
-------------------------------------------------------------------------------------------------------
T0+ : Elapsed time after the burst
T-EXP: Total Exposure time
We used GSC2.3 catalog for flux calibration.