{
  "bibcode": "2009GCN..9146....1O",
  "body": "M. Ohno, M. Suzuki, M. Kokubun, T. Takahashi (ISAS/JAXA),\nW. Iwakiri, M. Tashiro, Y. Terada, A. Endo, K. Onda,\nT. Sugasahara (Saitama U.), Y. Urata (NCU),\nT. Enoto, K. Nakazawa, K. Makishima (Univ. of Tokyo),\nK. Yamaoka, S. Sugita (Aoyama Gakuin U.), Y. E. Nakagawa, T. Tamagawa\n(RIKEN),\nT. Uehara, T. Takahashi, Y. Fukazawa, Y. Hanabata (Hiroshima U.),\nE. Sonoda, M. Yamauchi, N. Ohmori, K. Kono, H. Hayashi (Univ. of\nMiyazaki),\nS. Hong (Nihon U.), N. Vasquez (Tokyo Tech.),\non behalf of the Suzaku WAM team, report:\n\nThe long GRB 090411A (Fermi-GBM trigger #261173198 ; Preece et al., GCN 9130)\ntriggered the Suzaku Wide-band  All-sky Monitor (WAM) which covers an\n energy range of 50 keV - 5 MeV at 20:06:36 UT (=T0).\nThe observed light curve shows a double-peaked structure starting at T0-1s,\nending at T0+20s (T90) of about 16 seconds.\nThe fluence in 100 - 1000 keV was 7.0 +/-0.6 x 10^-6 erg/cm^2.\nThe 1-s peak flux measured from T0+12s was 2.5(-0.4,+0.3)\nphotons/cm^2/s in the same energy range.\n\nPreliminary result shows that the time-averaged spectrum from T0-1s to\nT0+20s is well fitted by a single power-law with a photon index\nof 1.9 (-0.1,+0.2) (chi^2/d.o.f = 9.2/13).\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\n http://www.astro.isas.jaxa.jp/suzaku/HXD-WAM/WAM-GRB/grb/trig/grb_table.html",
  "circularId": 9146,
  "createdOn": 1240048908000,
  "email": "ohno@astro.isas.jaxa.jp",
  "subject": "GRB 090411A: Suzaku WAM observation of the prompt emission",
  "submitter": "Masanori Ohno at ISAS/JAXA  <ohno@astro.isas.jaxa.jp>",
  "eventId": "GRB 090411A"
}