{
  "subject": "GRB 251023C: CALET Gamma-Ray Burst Monitor detection",
  "submitter": "Yuta Kawakubo at Aoyama Gakuin University <kawakubo@phys.aoyama.ac.jp>",
  "eventId": "GRB 251023C",
  "body": "Y. Asaoka (ICRR), A. Yoshida, T. Sakamoto, S. Sugita, Y. Kawakubo (AGU),\nK. Yamaoka (Nagoya U), S. Nakahira (JAXA), S. Torii, Y. Akaike,\nK. Kobayashi (Waseda U), Y. Shimizu, T. Tamura (Kanagawa U),\nN. Cannady (GSFC/UMBC), M. L. Cherry (LSU), S. Ricciarini (U of Florence),\nP. S. Marrocchesi (U of Siena),\nand the CALET collaboration:\n\nThe long GRB 251023C (Swift/BAT-GUANO localization skymap: DeLaunay et al.,\nGCN Circ 42412) triggered the CALET Gamma-ray Burst Monitor (CGBM) at \n16:24:24.93 UTC on 23 October 2025\n(https://cgbm.calet.jp/cgbm_trigger/flight/1445271383/index.html).\nThe burst signal was seen by all CGBM detectors.  \n\nThe burst light curve shows a multi-peaked structure that starts\nat T+1.9 sec, peaks at T+3.7 sec, and ends at T+23.4 sec.\nThe T90 and T50 durations measured by the SGM data are 18.7 +/- 1.4 sec\nand 5.7 +/- 0.8 sec (40-1000 keV), respectively.\n\nThe ground-processed light curve is available at\n\nhttps://cgbm.calet.jp/cgbm_trigger/ground/1445271383/\n\nThe CALET data used in this analysis are provided by\nthe Waseda CALET Operation Center located at Waseda University.",
  "circularId": 42414,
  "submittedHow": "web",
  "format": "text/plain",
  "bibcode": "2025GCN.42414....1A",
  "createdOn": 1761278402416
}