{
  "bibcode": "2021GCN.30117....1P",
  "body": "V. Pal'shin, 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), 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 bright GRB 210602A (MAXI/GSC detection: Serino et al., GCN Circ. 30113)\ntriggered the CALET Gamma-ray Burst Monitor (CGBM) at 12:04:01.493 UTC\non 2 June 2021\n(http://cgbm.calet.jp/cgbm_trigger/flight/1306670489/index.html).\nThe burst signal was seen by all CGBM detectors.\n\nThe burst light curve shows a single pulse which starts at T+0.5 sec,\npeaks at T+1.4 sec, and ends at T+3.0 sec. The T90 and T50 durations\nmeasured by the SGM data are 1.9 +- 0.3 sec and 0.5 +- 0.1 sec (40-1000\nkeV), respectively.\n\nThe ground processed light curve is available at\n\nhttp://cgbm.calet.jp/cgbm_trigger/ground/1306670489/\n\nThe CALET data used in this analysis are provided by\nthe Waseda CALET Operation Center located at the Waseda University.",
  "circularId": 30117,
  "createdOn": 1622703885000,
  "email": "val@phys.aoyama.ac.jp",
  "subject": "GRB 210602A: CALET Gamma-Ray Burst Monitor detection",
  "submitter": "Valentin Pal'shin at AGU  <val@phys.aoyama.ac.jp>",
  "eventId": "GRB 210602A"
}