TITLE: GCN CIRCULAR NUMBER: 19471 SUBJECT: GRB 160525C: CALET Gamma-Ray Burst Monitor detection DATE: 16/05/28 23:39:39 GMT FROM: Takanori Sakamoto at AGU T. Sakamoto, A. Yoshida, Y. Kawakubo, M. Moriyama, Y. Yamada (AGU), K. Yamaoka (Nagoya U), S. Nakahira (JAXA), I. Takahashi (IPMU), Y. Asaoka, S. Ozawa, S. Torii (Waseda U), Y. Shimizu, T. Tamura (Kanagawa U), W. Ishizaki (ICRR), M. L. Cherry (LSU), S. Ricciarini (U of Florence) P. S. Marrocchesi (U of Siena) and the CALET collaboration: GRB 160525C (Konus-Wind trigger time on 10:54:28.0 UT) triggered the CALET Gamma-Ray Burst Monitor (CGBM) at 10:54:20.25 on 25 May 2016. The burst signal was seen by all CGBM instruments. The light curve of the SGM shows a double peak structure starting at T0+4 sec, peaking at T0+5 sec, and ending at T0+6.5 sec sec. The T90 duration measured by the SGM data is 2.4 +- 0.3 sec (40-230 keV). The light curve is available at http://cgbm.calet.jp/cgbm_trigger/flight/1148208864/index.html The CGBM data used in this analysis are provided by the Waseda CALET Operation Center located at the Waseda University.