TITLE: GCN CIRCULAR NUMBER: 38439 SUBJECT: GRB 241130A: CALET Gamma-Ray Burst Monitor detection DATE: 24/12/04 13:47:11 GMT FROM: Yuta Kawakubo at Aoyama Gakuin University kawakubo@phys.aoyama.ac.jp
S. Ricciarini (U of Florence), A. Yoshida, T. Sakamoto, S. Sugita, Y. Kawakubo (AGU), K. Yamaoka (Nagoya U), S. Nakahira (JAXA), 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), P. S. Marrocchesi (U of Siena), and the CALET collaboration:
The long GRB 241130A (Fermi GBM Final Real-time Localization: Fermi GBM team, GCN Circ. 38405; Fermi GBM Detection: Sharma et al., GCN Circ. 38421; EIRSAT-1 GMOD Detection: McDermott et al., GCN Circ. 38423; IPN triangulation: Ridnaia et al., GCN Circ. 38424; Konus-Wind detection: Frederiks et al., GCN Circ. 38429) triggered the CALET Gamma-ray Burst Monitor (CGBM) at 23:13:45.911 UTC on 30 November 2024 (https://cgbm.calet.jp/cgbm_trigger/flight/1417043611/index.html). The burst signal was seen by all CGBM detectors. Because of a problem with the ground alert processing script, the GCN notice was not distributed automatically for this event.
The burst light curve shows a single pulse that starts at T-0.4 sec, peaks at T+0.1 sec, and ends at T+5.9 sec. The T90 and T50 durations measured by the SGM data are 5.4 +/- 0.8 sec and 2.4 +/- 0.5 sec (40-1000 keV), respectively.
The ground-processed light curve is available at
https://cgbm.calet.jp/cgbm_trigger/ground/1417043611
The CALET data used in this analysis are provided by the Waseda CALET Operation Center located at Waseda University.
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