TITLE: GCN CIRCULAR NUMBER: 19873 SUBJECT: GRB 160824B: CALET Gamma-Ray Burst Monitor detection DATE: 16/08/26 22:50:06 GMT FROM: Takanori Sakamoto at AGU 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), W. Ishizaki (ICRR), M. L. Cherry (LSU), S. Ricciarini (U of Florence), P. S. Marrocchesi (U of Siena) and the CALET collaboration: The long-duration GRB 160824B (Hamburg et al., GCN Circ. 19856; INTEGRAL-SPI/ACS trigger #7538) triggered the CALET Gamma-ray Burst Monitor (CGBM) at 14:21:12.34 on 24 August 2016. The burst signal was seen by 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 a single peak starting at T+0.5 sec, peaking at T+1.5 sec and ending at T+4 sec. The T90 duration measured by the SGM data is 2.7 +- 0.1 sec (40-1000 keV). The light curve is available at http://cgbm.calet.jp/cgbm_trigger/flight/1156083685/ The CALET data used in this analysis are provided by the Waseda CALET Operation Center located at the Waseda University.