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GCN Circular 14760

GRB 130604A: MITSuME Okayama upper limits
2013-06-04T15:15:58Z (11 years ago)
Daisuke Kuroda at OAO/NAOJ <>
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 MITSuME and OISTER collaboration:

We observed the field of GRB 130604A (Melandri et al., GCNC 14752)
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 2013-06-04 11:52:48 UT (~5.0 h after the burst).
We could not detect the previously reported afterglow
(Perley, GCNC 14753; Elenin et al., GCNC 14758) in all the three bands.

Three sigma upper limits of the OT are listed below.
We used GSC 2.3 catalog for flux calibration.

#T0+[day]  MID-UT    T-EXP[sec]   g'     Rc     Ic
0.24913    12:53:10    6360.0   >20.3  >20.2  >19.5
T0+ : Elapsed time after the burst [day]
T-EXP: Total Exposure time [sec]
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