{
  "circularId": 34700,
  "eventId": "GRB 230913A",
  "bibcode": "2023GCN.34700....1C",
  "submitter": "Yuta Kawakubo at Louisiana State University <kawakubo1@lsu.edu>",
  "body": "M. L. Cherry (LSU), A. Yoshida, T. Sakamoto, S. Sugita (AGU),\nY. Kawakubo (LSU), K. Yamaoka (Nagoya U), S. Nakahira (JAXA),\nY. Asaoka (ICRR), S. Torii, Y. Akaike, K. Kobayashi (Waseda U),\nY. Shimizu, T. Tamura (Kanagawa U), N. Cannady (GSFC/UMBC),\nS. Ricciarini (U of Florence),\nP. S. Marrocchesi (U of Siena),\nand the CALET collaboration:\n\nThe long GRB 230913A (Fermi GBM Final Real-time Localization: \nFermi GBM team, GCN Circ. 34680; Swift/BAT-GUANO arcminute \nlocalization, Ronchini et al., GCN Circ. 34683; Fermi GBM Observation:\nDalessi et al., GCN Circ. 34689; Glowbug gamma-ray detection: Kerr et al.,\nGCN Circ. 34696) triggered the CALET Gamma-ray Burst Monitor (CGBM) \nat 07:56:11.95 UTC on 13 September 2023\n(http://cgbm.calet.jp/cgbm_trigger/flight/1378626813/index.html).\nThe burst signal was seen by all CGBM detectors.\n\nThe burst light curve shows a single pulse that starts\nat T+0.9 sec, peaks at T+1.5 sec, and ends at T+4.4 sec.\nThe T90 and T50 durations measured by the SGM data are 3.1 +/- 0.3 sec\nand 1.9 +/- 0.4 sec (40-1000 keV), respectively.\n\nThe ground-processed light curve is available at\n\nhttp://cgbm.calet.jp/cgbm_trigger/ground/1378626813/\n\nThe CALET data used in this analysis are provided by\nthe Waseda CALET Operation Center located at Waseda University.",
  "createdOn": 1694748081066,
  "submittedHow": "web",
  "subject": "GRB 230913A: CALET Gamma-Ray Burst Monitor detection"
}