{
  "bibcode": "2020GCN.26972....1R",
  "body": "S. Ricciarini (U of Florence),\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, T. Tamura (Kanagawa U),\nN. Cannady (GSFC/UMBC), M. L. Cherry (LSU),\nP. S. Marrocchesi (U of Siena),\nand the CALET collaboration:\n\nThe bright GRB 200131A detected by Swift (Sbarufatti et al.,\nGCN Circ. 26953, Sakamoto et al., GCN Circ. 26967;\nhttps://gcn.gsfc.nasa.gov/other/200131A.gcn3)\ntriggered the CALET Gamma-ray Burst Monitor (CGBM) at 22:41:11.299 UTC\non 31 January 2020. The burst signal was seen by all CGBM detectors.\n\nThe burst light curve shows a multi-peaked structure which starts\nat T+3.3 sec, peaks at T+3.8 sec and ends at T+6.4 sec.\nThe T90 and T50 durations measured by the SGM data are 2.2 +- 0.1 sec\nand 1.4 +- 0.1 sec (40-1000 keV), respectively.\n\nThe ground processed light curve is available at\n\nhttp://cgbm.calet.jp/cgbm_trigger/ground/1264545439/\n\nThe CALET data used in this analysis are provided by\nthe Waseda CALET Operation Center located at the Waseda University.",
  "circularId": 26972,
  "createdOn": 1580713634000,
  "email": "val@phys.aoyama.ac.jp",
  "subject": "GRB 200131A: CALET Gamma-Ray Burst Monitor detection",
  "submitter": "Valentin Pal'shin at AGU  <val@phys.aoyama.ac.jp>",
  "eventId": "GRB 200131A"
}