TITLE: GCN CIRCULAR NUMBER: 21335 SUBJECT: GRB 170703A CALET Gamma-Ray Burst Monitor detection DATE: 17/07/14 00:50:32 GMT FROM: Takanori Sakamoto at AGU S. Torii (Waseda U), A. Yoshida, T. Sakamoto, Y. Kawakubo, M. Moriyama, Y. Yamada, A. Tezuka, S. Matsukawa (AGU), K. Yamaoka (Nagoya U), S. Nakahira (RIKEN), I. Takahashi (IPMU), Y. Asaoka, S. Ozawa (Waseda U), Y. Shimizu, T. Tamura (Kanagawa U), W. Ishizaki (ICRR), M. L. Cherry (LSU), S. Ricciarini (U of Florence), A. V. Penacchioni, P. S. Marrocchesi (U of Siena) and the CALET collaboration: The long-duration GRB 170703A (Konus-Wind trigger time on 08:44:03.46 UT) triggered the CALET Gamma-ray Burst Monitor (CGBM) at 08:44:05.85 on 3 July 2017. The burst signal was seen by the all CGBM instruments. Because of a problem in one of the ground alert processing script, the GCN notice was not distributed automatically for this event. The light curve of the SGM shows two peaks. The emission starts at T-2 sec, peaks at T+1 sec (the first peak), T+ 7 sec (the second peak), and ends at T+20 sec. The T90 duration measured by the SGM data is 26 +- 3 sec (40-1000 keV). The light curve is available at http://cgbm.calet.jp/cgbm_trigger/flight/1183106132/ The CALET data used in this analysis are provided by the Waseda CALET Operation Center located at the Waseda University.