TITLE: GCN CIRCULAR NUMBER: 33901 SUBJECT: GRB 230525A: CALET Gamma-Ray Burst Monitor detection DATE: 23/05/31 06:20:08 GMT FROM: Yuta Kawakubo at Louisiana State University kawakubo1@lsu.edu
Y. Kawakubo (LSU), A. Yoshida, T. Sakamoto, S. Sugita (AGU), K. Yamaoka (Nagoya U), S. Nakahira (RIKEN), Y. Asaoka (ICRR), S. Torii, Y. Akaike, 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 short GRB 230525A (Fermi-GBM Final Localization: The Fermi GBM team, GCN Circ. 33877; Fermi-GBM detection: The Fermi GBM team, GCN Circ. 33879) was detected in the ground analysis of the CALET Gamma-ray Burst Monitor (CGBM) data around 10:46:08.33 UTC on 25 May 2023 (referenced to GCN Circ 33879). The burst signal was seen by all CGBM detectors.
The burst light curve shows a short pulse around the reference time. We are not able to obtain the duration because no event data is available for ground-detected events.
The ground-processed light curve is available at http://cgbm.calet.jp/cgbm_trigger/ground/1369046781/
The CALET data used in this analysis are provided by the Waseda CALET Operation Center located at Waseda University.