{
  "bibcode": "2005GCN..4297....1O",
  "body": "M.Ohno, T.Takahashi, Y.Fukazawa (Hiroshima U.), \nK.Yamaoka, S.Sugita (Aoyama Gakuin U.),\nY.Terada (RIKEN), K.Abe, Y.Endo, S.Hong, K.Onda,\nM.Tashiro (Saitama U.), K.Nakazawa, G.Sato,\nT.Takahashi (ISAS/JAXA), R.Miyawaki,\nM.Kokubun, K.Makishima (Univ. of Tokyo) and the HXD-II team\n\n  The GRB 051008 prompt emission (Swift-BAT trigger #158855; \nMarshall et al., GCN 4069, Parsons et al., GCN 4075, Barthelmy et al.,\nGCN 4077) triggered Suzaku Wideband All-sky Monitor (WAM), \nwhich covers an energy band of 50 keV - 5 MeV at 16:33:18 UT. \n\nThe light curve shows two peaks with total duration about 48.2 sec. \nThis is consistent with Swift observation (GCN4069). \n\nWe performed the time-averaged spectral analysis \nusing the position information provided by Swift (Marshall et al., GCN 4069). \nWe found that the emission extends up to at least 2 MeV. \nThe cutoff power law model provided a good fit. \nIn the preliminary results, the photon index was 1.24 (+0.13 -0.15) \nand the cutoff energy was 1535 (+1419 -561) keV.  \nThe peak flux on 1 sec time scale was 4.1 (+0.3 -0.3) photons/s/cm^2 \n(100 keV - 2 MeV) and the fluence was 3.2 (+0.2 -0.2)e-5 erg/cm^2\n(100 keV - 2 MeV). The errors are at the statistical 90 % confidence level.\nSystematic errors, such as the flux calibration uncertainties of\nabout 20%, are not included in the errors.\n\nYou can see the detail information about the instrument of WAM and\nthe lightcurve in the Web site\n\nhttp://www.astro.isas.ac.jp/suzaku/research/HXD-WAM/WAM-GRB/grb/grb_table.html\n\nFurther analysis and the refinement is in progress.",
  "circularId": 4297,
  "createdOn": 1132661215000,
  "email": "ohno@hirax7.hepl.hiroshima-u.ac.jp",
  "subject": "GRB051008: Suzaku WAM observation of the prompt emission",
  "submitter": "Masanori Ohno at Hiroshima U  <ohno@hirax7.hepl.hiroshima-u.ac.jp>",
  "eventId": "GRB 051008"
}