{
  "bibcode": "2017GCN.20803....1M",
  "body": "P. S. Marrocchesi (U of Siena)  A. Yoshida, T. Sakamoto, Y. Kawakubo,\nM. Moriyama, Y. Yamada (AGU), K. Yamaoka (Nagoya U), S. Nakahira (JAXA),\nI. Takahashi (IPMU), Y. Asaoka, S. Ozawa, S. Torii (Waseda U), Y. Shimizu,\nT. Tamura (Kanagawa U), W. Ishizaki (ICRR), M. L. Cherry (LSU),\nS. Ricciarini (U of Florence),\nand the CALET collaboration:\n\nThe long-duration GRB 170228B (Fermi GBM trigger #509999585;\nXiao et al, GCN Circ. 20792) triggered the CALET Gamma-ray Burst\nMonitor (CGBM) at 18:32:58.03 on 28 February 2017.  The burst signal\nwas seen by the HXM2 and SGM instrument.\n\nThe light curve of the SGM shows two peaks.  The first peak starts at T0,\npeaks at T+5 sec and ends at T+18 sec.  The second peak starts at T+20 sec,\npeaks at T+25 sec and ends at T+35 sec.  The T90 duration measured by\nthe SGM data is 32.2 +- 1.2 sec (40-1000 keV).\n\nThe light curve is available at\n\nhttp://cgbm.calet.jp/cgbm_trigger/flight/1172341676/\n\nThe CALET data used in this analysis are provided by the Waseda\nCALET Operation Center located at the Waseda University.",
  "circularId": 20803,
  "createdOn": 1488521629000,
  "email": "tsakamoto@phys.aoyama.ac.jp",
  "subject": "GRB 170228B CALET Gamma-Ray Burst Monitor detection",
  "submitter": "Takanori Sakamoto at AGU  <tsakamoto@phys.aoyama.ac.jp>",
  "eventId": "GRB 170228B"
}