{
  "bibcode": "2009GCN.10186....1H",
  "body": "H. Hayashi, N. Ohmori, A. Daikyuji,E. Sonoda, K. Kono,\nK. Noda, Y. Nishioka, M. Yamauchi (Univ. of Miyazaki)\nT. Sugasahara, M. Tashiro, Y. Terada, A. Endo, K. Onda,\nW. Iwakiri (Saitama U.), S. Sugita(Nagoya U.), K. Yamaoka (Aoyama  \nGakuin U.),\nM. Ohno, M. Suzuki, M. Kokubun, T. Takahashi (ISAS/JAXA),\nY. E. Nakagawa, T. Tamagawa (RIKEN), N. Ohmori, A. Daikyuji,\nE. Sonoda, K. Kono, H. Hayashi, K. Noda, Y. Nishioka, M. Yamauchi\n(Univ. of Miyazaki), N. Vasquez (Tokyo Tech.), Y. Urata, H.M  Lin (NCU),\nY. Hanabata, T. Uehara, T. Takahashi, Y. Fukazawa (Hiroshima U.),\nT. Enoto, K. Nakazawa, K. Makishima (Univ. of Tokyo), S. Hong\n(Nihon U.), on behalf of the Suzaku WAM team, report\n\nThe short GRB 091117A (Swift/BAT Detected in ground analysis ; Cummings et al.,\nGCN 10171) triggered the Suzaku Wide-band  All-sky Monitor (WAM) which covers an \nenergy range of 50 keV - 5 MeV at 2009-11-17 17:44:25.253 UT (=T0). \n\nThe observed light curve shows a single peak starting at T0 s, ending \nat T0+1 s with a duration (T90) of about 0.4 seconds.\nThe fluence in 100 - 1000 keV was 1.54 (-0.26/+0.25) x10^-6 erg/cm^2. \nThe 1-s peak flux measured from T0 s was 2.78 (-0.30,+0.37) photons/cm^2/s \nin the same energy range.\n\nPreliminary result shows that the time-averaged spectrum from T0 s to \nT0+1 s is well fitted by a single power-law with a photon index \nof 1.29 (-0.13,+0.13) (chi^2/d.o.f. = 42/33).\n\nAll the quoted errors are at statistical 90% confidence level,\nin which the systematic uncertainties are not included.\n\nThe light curves for this burst are available at:\n\nhttp://www.astro.isas.jaxa.jp/suzaku/HXD-WAM/WAM-GRB/grb/trig/grb_table.html",
  "circularId": 10186,
  "createdOn": 1258875019000,
  "email": "hayasi@astro.miyazaki-u.ac.jp",
  "subject": "GRB 091117A: Suzaku WAM observation of the prompt emission",
  "submitter": "Hidenori Hayasi at Miyazaki U  <hayasi@astro.miyazaki-u.ac.jp>",
  "eventId": "GRB 091117A"
}