{
  "bibcode": "2021GCN.31226....1T",
  "body": "T. Tamura (Kanagawa U),\nA. Yoshida, T. Sakamoto, V. Pal'shin, 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 (Kanagawa U), N. Cannady (GSFC/UMBC), M. L. Cherry (LSU),\nS. Ricciarini (U of Florence), P. S. Marrocchesi (U of Siena),\nand the CALET collaboration:\n\nThe long bright GRB 211211A (Swift detection: Ambrosi et al.,\nGCN Circ. 31202, Stamatikos et al., GCN Circ. 31209;\nFermi GBM observation: Mangan et al., GCN Circ. 31210;\nhttps://gcn.gsfc.nasa.gov/other/211211A.gcn3)\ntriggered the CALET Gamma-ray Burst Monitor (CGBM) at 13:09:57.513 UTC\non 11 December 2021\n(http://cgbm.calet.jp/cgbm_trigger/flight/1323263412/index.html).\nThe burst signal was seen by all CGBM detectors.\n\nThe burst light curve shows several partially overlapped multi-peaked\npulses which start at T+3.6 sec, peak at T+9.1 sec,and end at T+73.1 sec.\nThe T90 and T50 durations measured by the SGM data are 33.8 +- 0.9 sec and\n12.1 +- 0.4 sec (40-1000 keV), respectively.\n\nThe ground processed light curve is available at\n\nhttp://cgbm.calet.jp/cgbm_trigger/ground/1323263412/\n\nThe CALET data used in this analysis are provided by\nthe Waseda CALET Operation Center located at the Waseda University.",
  "circularId": 31226,
  "createdOn": 1639385910000,
  "email": "val@phys.aoyama.ac.jp",
  "subject": "GRB 211211A: CALET Gamma-Ray Burst Monitor detection",
  "submitter": "Valentin Pal'shin at AGU  <val@phys.aoyama.ac.jp>",
  "eventId": "GRB 211211A"
}