TITLE: GCN CIRCULAR NUMBER: 34210 SUBJECT: GRB 230703A: CALET Gamma-Ray Burst Monitor detection DATE: 23/07/13 06:33:14 GMT FROM: Yuta Kawakubo at Louisiana State University <kawakubo1@lsu.edu> Y. Akaike (Waseda U), A. Yoshida, T. Sakamoto, S. Sugita (AGU), Y. Kawakubo (LSU), K. Yamaoka (Nagoya U), S. Nakahira (JAXA), Y. Asaoka (ICRR), S. Torii, K. Kobayashi (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 long GRB 230703A (Fermi GBM Trigger Number 710117592; GRID detection: Wang et al., GCN Circ. 34188) triggered the CALET Gamma-ray Burst Monitor (CGBM) at 22:53:04.92 UTC on 3 July 2023 (http://cgbm.calet.jp/cgbm_trigger/flight/1372459956/index.html). The burst signal was seen by all CGBM detectors. The burst light curve shows a double-peaked structure that starts at T+2.1 sec, peaks at T+4.0 sec, and ends at T+17.5 sec. The T90 and T50 durations measured by the SGM data are 13.5 +/- 0.6 sec and 7.9 +/- 0.4 sec (40-1000 keV), respectively. The ground-processed light curve is available at http://cgbm.calet.jp/cgbm_trigger/ground/1372459956/ The CALET data used in this analysis are provided by the Waseda CALET Operation Center located at Waseda University. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...