{
  "bibcode": "2009GCN..9147....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\n\nThe long GRB 090411B (Fermi-GBM trigger #261186466/090411991;\n Preece et al., GCN 9131)\ntriggered the Suzaku Wide-band  All-sky Monitor (WAM) which covers an\n energy range of 50 keV - 5 MeV at 23:47:38 UT (=T0).\nThe observed light curve shows a multi-peaked structure starting at T0-1s,\nending at T0+25s with a duration (T90) of about 20 seconds.\nThe fluence in 100 - 1000 keV was 7.6 +/- 0.3 x 10^-6 erg/cm^2.\nThe 1-s peak flux measured from T0+6s was 2.3 +/- 0.2 photons/cm^2/s\nin the same energy range.\n\nPreliminary result shows that the time-averaged spectrum from T0-1s to\nT0+22s is well fitted by a single power-law with a photon index\nof 2.4 +/- 0.1 (chi^2/d.o.f = 23.2/21).\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": 9147,
  "createdOn": 1240049053000,
  "email": "ohno@astro.isas.jaxa.jp",
  "subject": "GRB 090411B: Suzaku WAM observation of the prompt emission",
  "submitter": "Masanori Ohno at ISAS/JAXA  <ohno@astro.isas.jaxa.jp>",
  "eventId": "GRB 090411B"
}