{
  "bibcode": "2019GCN.23877....1I",
  "body": "T. Ito, A. Yoshida, T. Sakamoto, V. Pal'shin, S. Sugita (AGU),\nY. Kawakubo (LSU), A. Tezuka, S. Matsukawa, H. Onozawa, H. Morita,\nY. Sone (AGU), K. Yamaoka (Nagoya U), S. Nakahira (RIKEN),\nI. Takahashi (IPMU), Y. Asaoka, S. Ozawa, S. Torii (Waseda U),\nY. Shimizu, T. Tamura (Kanagawa U),\nW. Ishizaki (ICRR), M. L. Cherry (LSU),\nS. Ricciarini (U of Florence),\nA. V. Penacchioni, P. S. Marrocchesi (U of Siena),\nand the CALET collaboration:\n\nThe long GRB 190204A (Swift-BAT triggers #887579 and #887580:\nLien et al., GCN Circ. 23852, Sakamoto et al., GCN Circ.23872;\nMAXI/GSC detection: Oeda et al., GCN Circ. 23854;\nAstroSat CZTI detection: Khanam et al., GCN Circ. 23856;\nKonus-Wind observation: Kozlova et al., GCN Circ. 23869)\ntriggered the CALET Gamma-ray Burst Monitor (CGBM)\nat 05:46:05.075 UTC on 4 February 2019.\nNo real-time CGBM GCN notice was distributed about this trigger\nbecause the real-time communication from the ISS was off (loss of signal).\nThe burst signal was seen by all CGBM detectors.\n\nThe burst light curve shows a single pulse which starts at T-7.7 sec,\npeaks at 1.1 sec and ends at T+5.8 sec.\nThe T90 and T50 durations measured by the SGM data are\n11.0 +- 2.0 sec and 2.2 +- 0.5 sec (40-1000 keV), respectively.\nThe ground processed light curve is available at\n\nhttp://cgbm.calet.jp/cgbm_trigger/ground/1233294225/\n\nThe CALET data used in this analysis are provided by\nthe Waseda CALET Operation Center located at the Waseda University.",
  "circularId": 23877,
  "createdOn": 1549463802000,
  "email": "val@phys.aoyama.ac.jp",
  "subject": "GRB 190204A: CALET Gamma-Ray Burst Monitor detection",
  "submitter": "Valentin Pal'shin at AGU  <val@phys.aoyama.ac.jp>",
  "eventId": "GRB 190204A"
}