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GCN Circular 19495

GRB 160601A: MITSuME Akeno optical upper limits
2016-06-03T06:44:27Z (8 years ago)
Taketoshi Yoshii at Tokyo Tech <>
Y. Saito, Y. Tachibana, T. Yoshii, T. Fujiwara, Y. Ono, Y. Muraki, S. Harita, 
T, Ozawa, K. Saisho, Y. Yatsu, and N. Kawai (Tokyo Tech) 
report on behalf of the MITSuME collaboration:

We searched for the optical counterpart of GRB 160601A (D. Kocevski et al., GCN Circular #19478) 
with theoptical three color (g', Rc, and Ic) CCD cameras attached to the 
MITSuME 50 cm telescope of Akeno Observatory, Yamanashi, Japan.

The observation started on 2016-06-01 23:43:35 UT (33 sec after the burst).
We did not find any new point source within XRT circle in all three bands.

We obtained following limits for the magnitudes.

T0+[day]     MID-UT      T-EXP[sec]          g'           Rc            Ic 
0.078          16:35:35        12060        >21.7         >21.1         >19.9    
T0+ : Elapsed time after the burst.
T-EXP: Total Exposure time.
We used GSC2.3 catalog for flux calibration.
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