TITLE: GCN CIRCULAR NUMBER: 19297 SUBJECT: GRB 160408A: CALET Gamma-Ray Burst Monitor detection DATE: 16/04/12 02:48:31 GMT FROM: Takanori Sakamoto at AGU W. Ishizaki (ICRR), A. Yoshida, T. Sakamoto, 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), M. L. Cherry (LSU), S. Ricciarini (U of Florence), P. S. Marrocchesi (U of Siena) and the CALET collaboration: The short-duration GRB 160408A (Swift, Evans et al. GCN Circ. 19260; Fermi-GBM, Roberts et al. GCN Circ. 19265; INTEGRAL-ACS, Trigger #7441) triggered the CALET Gamma-Ray Burst Monitor (CGBM) at 6:25:37.4 on 8 April 2016. The burst signal was detected by all CGBM instruments. The light curve of the SGM shows a single peak. The emission starts at T0+6.4 sec, peaks at T0+6.5 sec and ends at T0+7.1 sec. The T90 duration measured by the SGM data is 0.38 +- 0.18 sec (40-1000 keV). The CGBM data used in this analysis are provided by the Waseda CALET Operation Center located at the Waseda University.