{
  "bibcode": "2018GCN.22425....1I",
  "body": "W. Ishizaki (ICRR), A. Yoshida, T. Sakamoto, V. Pal'shin, Y. Kawakubo,\nM. Moriyama, Y. Yamada, A. Tezuka, S. Matsukawa (AGU),\nK. Yamaoka (Nagoya U), S. Nakahira (RIKEN), I. Takahashi (IPMU),\nY. Asaoka, S. Ozawa, S. Torii (Waseda U), Y. Shimizu,\nT. Tamura (Kanagawa U), M. L. Cherry (LSU), S. Ricciarini (U of Florence),\nA. V. Penacchioni, P. S. Marrocchesi (U of Siena)\nand the CALET collaboration:\n\nThe bright GRB 180218A (Svinkin et al., GCN circ. 22423;\nPoolakkil et al., GCN circ. 22424) triggered the CALET Gamma-ray\nBurst Monitor (CGBM) at 15:14:05.326 UTC on 18 February 2018.\nThe burst signal was seen by all CGBM detectors.\n\nThe burst light curve shows a single multi-peaked pulse which starts at\nT+0.5 sec, peaks at T+4.6 sec and ends at T+8.5 sec.  The T90 and the\nT50 durations measured by the SGM data are 4.75 +- 1.27 sec and\n1.88  +- 0.13 sec (40-1000 keV), respectively.\n\nThe ground processed light curve is available at\n\nhttp://cgbm.calet.jp/cgbm_trigger/ground/1203001776/\n\nThe CALET data used in this analysis are provided by the Waseda CALET\nOperation Center located at the Waseda University.",
  "circularId": 22425,
  "createdOn": 1519106554000,
  "email": "tsakamoto@phys.aoyama.ac.jp",
  "subject": "GRB 180218A CALET Gamma-Ray Burst Monitor detection",
  "submitter": "Takanori Sakamoto at AGU  <tsakamoto@phys.aoyama.ac.jp>",
  "eventId": "GRB 180218A"
}