{
  "bibcode": "2020GCN.27777....1Y",
  "body": "A. Yoshida, T. Sakamoto, V. Pal'shin, S. Sugita (AGU),\nY. Kawakubo (LSU), K. Yamaoka (Nagoya U), S. Nakahira (RIKEN),\nY. Asaoka, S. Torii (Waseda U), Y. Shimizu, T. Tamura (Kanagawa U),\nN. Cannady (GSFC/UMBC), M. L. Cherry (LSU),\nS. Ricciarini (U of Florence), P. S. Marrocchesi (U of Siena),\nand the CALET collaboration:\n\nThe bright short hard GRB 200521A (AGILE/MCAL and ratemeters detection:\nVerrecchia et al., GCN Circ. 27776) triggered the CALET Gamma-ray Burst\nMonitor (CGBM) at 12:16:40.803 UTC on 21 May 2020.\nThe burst signal was seen by all CGBM detectors.\nBecause of a problem in one of the ground alert processing script, the GCN\nnotice was not distributed automatically for this event.\n\nThe burst light curve shows a bright pulse which starts at T-0.304 sec,\npeaks at -0.016 sec and ends at T+0.056 sec. The T90 and T50 durations\nmeasured by the SGM data are 0.240 +- 0.094 sec and 0.104 +- 0.018 sec\n(40-1000 keV), respectively.\n\nThe ground processed light curve is available at\n\nhttp://cgbm.calet.jp/cgbm_trigger/ground/1274098167/\n\nThe CALET data used in this analysis are provided by\nthe Waseda CALET Operation Center located at the Waseda University.",
  "circularId": 27777,
  "createdOn": 1590141156000,
  "email": "val@phys.aoyama.ac.jp",
  "subject": "GRB 200521A: CALET Gamma-Ray Burst Monitor detection",
  "submitter": "Valentin Pal'shin at AGU  <val@phys.aoyama.ac.jp>",
  "eventId": "GRB 200521A"
}