{
  "bibcode": "2018GCN.22366....1S",
  "body": "Y. Shimizu (Kanagawa U), 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),\nT. Tamura (Kanagawa U), W. Ishizaki (ICRR), M. L. Cherry (LSU),\nS. Ricciarini (U of Florence), A. V. Penacchioni, P. S. Marrocchesi (U of Siena)\nand the CALET collaboration:\n\nThe long-duration GRB 180120A (Fermi-GBM trigger #538117098;\nKonus-Wind trigger time on 04:58:18.23) triggered the CALET\nGamma-ray Burst Monitor (CGBM) at 04:58:09.54 on 20 January 2018.\nThe burst signal was seen by the all CGBM instruments.\n\nThe light curve shows two bright overlapping pulses.  The first pulse starts\nat T-2 sec, peaks at T+6 sec and ends at T+20 sec.  There is a possible\nadditional pulse around T+15 sec.  The second pulse starts at T+15 sec,\npeaks at T+25 sec and ends at T+40 sec.  The T90 and the T50 durations\nmeasured by the SGM data are 24.9 +- 4.1 sec and 16.3 +- 0.4 sec\n(40-1000 keV), respectively.\n\nThe ground processed light curve is available at\n\nhttp://cgbm.calet.jp/cgbm_trigger/ground/1200459271/\n\nThe CALET data used in this analysis are provided by the Waseda CALET Operation\nCenter located at the Waseda University.",
  "circularId": 22366,
  "createdOn": 1516697094000,
  "email": "tsakamoto@phys.aoyama.ac.jp",
  "subject": "GRB 180120A CALET Gamma-Ray Burst Monitor detection",
  "submitter": "Takanori Sakamoto at AGU  <tsakamoto@phys.aoyama.ac.jp>",
  "eventId": "GRB 180120A"
}