{
  "bibcode": "2018GCN.22816....1Y",
  "body": "K. Yamaoka (Nagoya U), A. Yoshida, T. Sakamoto, V. Pal'shin,\nY. Kawakubo, A. Tezuka, S. Matsukawa, H. Onozawa, T. Ito,\nH. Morita, Y. Sone (AGU), S. Nakahira (RIKEN), I. Takahashi (IPMU),\nY. Asaoka, S. Ozawa, S. Torii (Waseda U),\nY. Shimizu, T. Tamura (Kanagawa U), W. Ishizaki (ICRR),\nM. L. Cherry (LSU), S. Ricciarini (U of Florence),\nA. V. Penacchioni, P. S. Marrocchesi (U of Siena)\nand the CALET collaboration:\n\nThe long GRB 180618B (INTEGRAL SPI-ACS trigger #8079;\nKonus-Wind trigger time on 22:40:26.066)\ntriggered the CALET Gamma-ray Burst Monitor (CGBM)\nat 22:40:18.199 UTC on 18 June 2018.  The burst signal\nwas clearly seen by the SGM instrument.  There is a hint\nof the emission seen by the HXM instrument.\n\nThe burst light curve shows a single FRED-like pulse which starts\nat T-3.8 sec, peaks at T-1.5 sec and ends at T+15.4 sec.\nThe T90 and the T50 durations measured by the SGM data are\n17 +- 4 sec and 5.3 +- 0.5 sec (40-1000 keV), respectively.\n\nThe ground processed light curve is available at\n\nhttp://cgbm.calet.jp/cgbm_trigger/ground/1213396756\n\nThe CALET data used in this analysis are provided by the Waseda CALET\nOperation Center located at the Waseda University.",
  "circularId": 22816,
  "createdOn": 1529564289000,
  "email": "tsakamoto@phys.aoyama.ac.jp",
  "subject": "GRB 180618B: CALET Gamma-Ray Burst Monitor detection",
  "submitter": "Takanori Sakamoto at AGU  <tsakamoto@phys.aoyama.ac.jp>",
  "eventId": "GRB 180618B"
}