{
  "bibcode": "2021GCN.30744....1K",
  "body": "K. Kobayashi (Waseda 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 (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 210822A (Swift detection: Page et al., GCN Circ. 30677, Lien\net al., GCN Circ. 30689; GECAM detection: Wang et al., GCN Circ. 30678,\n30696; Fermi-LAT detection: Ohno et al., GCN Circ. 30687; AstroSat CZTI\ndetection: Prasad et al., GCN Circ. 30693; Konus-Wind detection:\nFrederiks et al., GCN Circ. 30694; GRBAlpha detection: Ohno et al.,\nGCN Circ. 30697; https://gcn.gsfc.nasa.gov/other/210822A.gcn3)\ntriggered the CALET Gamma-ray Burst Monitor (CGBM) at 09:18:18.162 UTC\non 22 August 2021. The burst signal was seen by all CGBM detectors.\nBecause of a problem in one of the ground alert processing script,\nthe GCN notice was not distributed automatically for this event.\n\nThe burst light curve shows a multi-peaked structure which starts at\nT-0.2 sec, peaks at T+0.1 sec and ends at T+11.0 sec.\nThe T90 and T50 durations measured by the SGM data are 10.1 +- 0.5 sec\nand 5.8 +- 0.4 sec (40-1000 keV), respectively.\n\nThe ground processed light curve is available at\n\nhttp://cgbm.calet.jp/cgbm_trigger/ground/1313658800/\n\nThe CALET data used in this analysis are provided by\nthe Waseda CALET Operation Center located at the Waseda University.",
  "circularId": 30744,
  "createdOn": 1630307183000,
  "email": "val@phys.aoyama.ac.jp",
  "subject": "GRB 210822A: CALET Gamma-Ray Burst Monitor detection",
  "submitter": "Valentin Pal'shin at AGU  <val@phys.aoyama.ac.jp>",
  "eventId": "GRB 210822A"
}