TITLE: GCN CIRCULAR NUMBER: 25038 SUBJECT: GRB 190706C: CALET Gamma-Ray Burst Monitor detection DATE: 19/07/09 10:01:00 GMT FROM: Valentin Pal'shin at AGU T. Sakamoto, A. Yoshida, V. Pal'shin, S. Sugita (AGU), Y. Kawakubo (LSU), K. Yamaoka (Nagoya U), S. Nakahira (RIKEN), Y. Asaoka, S. Ozawa, S. Torii (Waseda U), Y. Shimizu, T. Tamura (Kanagawa U), N. Cannady (GSFC/UMBC), M. L. Cherry (LSU), S. Ricciarini (U of Florence), P. S. Marrocchesi (U of Siena) and the CALET collaboration: The bright GRB 190706C (IPN triangulation: Svinkin et al., GCN Circ. 25035) triggered the CALET Gamma-ray Burst Monitor (CGBM) at 13:42:22.560 UTC on 6 July 2019. The burst signal was seen by all CGBM detectors. The burst light curve shows a single multi-peaked emission episode which starts at T+3.5 sec, peaks at T+6.6 sec and ends at T+10.4 sec. The T90 and T50 durations measured by the SGM data are 3.9 +- 0.8 sec and 2.2 +- 0.1 sec (40-1000 keV), respectively. Despite the burst high intensity there is almost no emission above ~1 MeV. The ground processed light curve is available at http://cgbm.calet.jp/cgbm_trigger/ground/1246455687/ The CALET data used in this analysis are provided by the Waseda CALET Operation Center located at the Waseda University.