{
  "bibcode": "2022GCN.32974....1S",
  "body": "T. Sakamoto, A. Yoshida,  S. Sugita (AGU), Y. Kawakubo (LSU), \nK. Yamaoka (Nagoya U), S. Nakahira (RIKEN), Y. Asaoka (ICRR),\nS. Torii, Y. Akaike, K. Kobayashi (Waseda U),\nY. Shimizu, T. Tamura (Kanagawa U), N. Cannady (GSFC/UMBC),\nM. L. Cherry (LSU), S. Ricciarini (U of Florence),\nP. S. Marrocchesi (U of Siena),\nand the CALET collaboration:\n\nThe long GRB 221121A (Fermi GBM Final Real-time Localization:\nFermi GBM team, GCN Circ. 32960; AstroSat CZTI detection:\nGopalakrishnan et al., GCN Circ 32969; IPN triangulation: \nKozyrev etc al., GCN Circ. 32971) triggered the CALET Gamma-ray\nBurst Monitor (CGBM) at 06:34:47.10 UTC on 21 November 2022\n(http://cgbm.calet.jp/cgbm_trigger/flight/1353047657/index.html).\nThe burst signal was seen by only SGM detector.\n\nThe burst light curve shows a single pulse which starts\nat T+2.6 sec, peaks at T+3.1 sec, and ends at T+30.2 sec.\nThe T90 and T50 durations measured by the SGM data are 24.1 +/- 0.8 sec\nand 10.1 +/- 1.7 sec (40-1000 keV), respectively.\n\nThe ground processed light curve is available at\n\nhttp://cgbm.calet.jp/cgbm_trigger/ground/1353047657/\n\nThe CALET data used in this analysis are provided by\nthe Waseda CALET Operation Center located at the Waseda University.",
  "circularId": 32974,
  "createdOn": 1669187135000,
  "email": "kawakubo1@lsu.edu",
  "subject": "GRB 221121A: CALET Gamma-Ray Burst Monitor detection",
  "submitter": "Yuta Kawakubo at Louisiana State U./CALET  <kawakubo1@lsu.edu>",
  "eventId": "GRB 221121A"
}