{
  "bibcode": "2020GCN.27572....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, S. Torii (Waseda U), Y. Shimizu (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 GRB 200412B (BALROG localization: Burgess et al.,\nGCN Circ. 27548; Fermi-LAT detection: Longo et al., GCN Circ. 27557;\nFermi GBM detection: Mailyan and Hamburg, GCN Circ. 27558;\nhttps://gcn.gsfc.nasa.gov/other/200412B.gcn3)\ntriggered the CALET Gamma-ray Burst Monitor (CGBM) at 09:08:43.975 UTC\non 12 April 2020. The burst signal was seen by all CGBM detectors.\n\nThe burst light curve shows a multi-peaked structure which starts\nat T-0.3 sec, peaks at T+6.2 sec and ends at T+13.1 sec. The T90 and T50\ndurations measured by the SGM data are 6.1 +- 0.5 sec and 1.8 +- 0.1 sec\n(40-1000 keV), respectively.\n\nThe ground processed light curve is available at\n\nhttp://cgbm.calet.jp/cgbm_trigger/ground/1270717362/\n\nThe CALET data used in this analysis are provided by\nthe Waseda CALET Operation Center located at the Waseda University.",
  "circularId": 27572,
  "createdOn": 1586852452000,
  "email": "val@phys.aoyama.ac.jp",
  "subject": "GRB 200412B: CALET Gamma-Ray Burst Monitor detection",
  "submitter": "Valentin Pal'shin at AGU  <val@phys.aoyama.ac.jp>",
  "eventId": "GRB 200412B"
}