{
  "bibcode": "2023GCN.33502....1C",
  "body": "N. Cannady (GSFC/UMBC), A. Yoshida, T. Sakamoto, S. Sugita (AGU),\nY. Kawakubo (LSU), K. Yamaoka (Nagoya U), S. Nakahira (RIKEN),\nY. Asaoka (ICRR), S. Torii, Y. Akaike, K. Kobayashi (Waseda U),\nY. Shimizu, T. Tamura (Kanagawa U), \nM. L. Cherry (LSU), S. Ricciarini (U of Florence),\nP. S. Marrocchesi (U of Siena),\nand the CALET collaboration:\n\nThe long GRB 230321A (Fermi GBM Final Real-time Localization: \nFermi GBM team, GCN Circ. 33490; BALROG localization: Kunzweiler et al.,\nGCN Circ 33491) triggered the CALET Gamma-ray Burst Monitor (CGBM)\nat 04:21:42.09 UTC on 21 March 2023\n(http://cgbm.calet.jp/cgbm_trigger/flight/1363407527/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+1.0 sec, peaks at T+31.9 sec, and ends at T+86.6 sec.\nThe T90 and T50 durations measured by the SGM data are 75.5 +/- 1.2 sec\nand 35.4 +/- 3.1 sec (40-1000 keV), respectively.\n\nThe ground-processed light curve is available at\n\nhttp://cgbm.calet.jp/cgbm_trigger/ground/1363407527/\n\nThe CALET data used in this analysis are provided by\nthe Waseda CALET Operation Center located at Waseda University.",
  "circularId": 33502,
  "createdOn": 1679458056000,
  "email": "kawakubo1@lsu.edu",
  "subject": "GRB 230321A: CALET Gamma-Ray Burst Monitor detection",
  "submitter": "Yuta Kawakubo at Louisiana State U./CALET  <kawakubo1@lsu.edu>",
  "eventId": "GRB 230321A"
}