Skip to main content
Testing. You are viewing the public testing version of GCN. For the production version, go to
New Announcement Feature, Code of Conduct, Circular Revisions. See news and announcements

GCN Circular 16176

GRB 140423A: MITSuME Akeno upper limits
2014-04-28T12:03:53Z (10 years ago)
Taketoshi Yoshii at Tokyo Tech <>
Y. Ono, Y. Tachibana, Y. Saito, H. Ohuchi, T. Yoshii, 
S. Kurita, T. Fujiwara, Y. Yatsu, and N. Kawai (Tokyo Tech)
report on behalf of the MITSuME collaboration:

We performed the follow-up observation for optical afterglow of GRB140423A(E.Sonbas et al., GCN Circular #16142, Elenin et al.,GCN Circular #16143 etc.) with the optical three color (g, Rc, and Ic) CCD cameras attached to the MITSuME 50 cm
telescope of Akeno Observatory, Yamanashi, Japan.
The observation started on 2014-04-24 14:10:46 UT (31.1h after the burst).
We did not find the optical source on the position of GRB140423A.

The measured magnitudes were listed below.

T0+[sec]           MID-UT             T-EXP[sec]         g'     Rc       Ic
44700      14-04-24 15:42:02      9600          >21.3  >21.2  >20.6
T0+ : Elapsed time after the burst 
T-EXP: Total Exposure time 
We used GSC2.3 catalog for flux calibration.
Looking for U.S. government information and services? Visit