{
  "bibcode": "2009GCN..9314....1U",
  "body": "T. Uehara, Y. Hanabata, T. Takahashi, Y. Fukazawa(Hiroshima U.),\nM. Ohno, M. Suzuki, M. Kokubun, T. Takahashi (ISAS/JAXA),\nK. Kono, E. Sonoda, M. Yamauchi, N. Ohmori, H. Hayashi,\nK. Noda, A. Daikyuji, Y. Nishioka (Univ. of Miyazaki),\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,\nT. Tamagawa (RIKEN), S. Hong (Nihon U.), N. Vasquez (Tokyo Tech.),\non behalf of the Suzaku WAM team, report:\n\nThe long GRB 090428B (Fermi/GBM\ntrigger 262617313 / 090428552, Bissaldi et al., GCN 9295)\ntriggered the Suzaku Wide-band  All-sky Monitor (WAM) which covers an\nenergy range of 50 keV - 5 MeV at 13:15:12.66 UT (=T0).\nThe observed light curve shows a single FRED-like peak\nstarting at T0-10s, ending at T0+9s, with a duration (T90) of about 19.0 seconds. \n\nThe fluence in 100 - 1000 keV was 2.6(+0.5/-0.9) X10^-6 erg/cm^2.\nThe 1-s peak flux measured from T0+1s was 1.1 photons/cm^2/s in the same\nenergy range.\n\nPreliminary result shows that the time-averaged spectrum from T0-10s to\nT0+9s is well fitted by a single power-law with a photon index\nof 2.0 (+0.5/-0.4) (chi^2/d.o.f = 5/7).\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": 9314,
  "createdOn": 1241155346000,
  "email": "uehara@hirax7.hepl.hiroshima-u.ac.jp",
  "subject": "GRB 090428B: Suzaku WAM observation of the prompt emission",
  "submitter": "Takeshi Uehara at Hiroshima U  <uehara@hirax7.hepl.hiroshima-u.ac.jp>",
  "eventId": "GRB 090428B"
}