GCN Circular 10678
Subject
GRB100423A: MITSuME optical upper limits
Date
2010-04-25T08:13:10Z (14 years ago)
From
Daisuke Kuroda at OAO/NAOJ <dikuroda@oao.nao.ac.jp>
D. Kuroda, K. Yanagisawa, Y. Shimizu, H. Toda (OAO, NAOJ),
S. Nagayama (NAOJ), M. Yoshida (Hiroshima), K. Ohta (Kyoto)
and N. Kawai(Tokyo Tech)
report on behalf of the MITSuME collaboration:
We observed the field of GRB 100423A (Stroh et al. GCNC 10651)
with the optical three color (g', Rc and Ic) CCD camera attached
to the MITSuME 50cm telescope of Okayama Astrophysical Observatory.
The observation started on 2010-04-23 13:27:35 UT (~12.9h after the
burst). We could not detect the previously reported afterglow
(Filgas et al., GCN 10652) 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
------------------------------------------------------
0.59033 14:45:04 4500.0 >18.9 >19.0 >18.4
------------------------------------------------------
T0+ : Elapsed time after the burst [day]
T-EXP: Total Exposure time [sec]