{
  "bibcode": "2009GCN.10023....1V",
  "body": "N. Vasquez (Tokyo Tech.), M. Ohno, M. Suzuki,M. Kokubun,\nT. Takahashi (ISAS/JAXA), K. Yamaoka (Aoyama Gakuin U.),\nN. Ohmori, E. Sonoda, K. Kono, H. Hayashi, A. Daikyuji,\nY. Nishioka, K. Noda, M. Yamauchi (Univ. of Miyazaki),\nY. Hanabata, T. Uehara, T. Takahashi, Y. Fukazawa (Hiroshima U.),\nW. Iwakiri, M. Tashiro, Y. Terada, A. Endo, K. Onda, T. Sugasahara  \n(Saitama U.),\nY. Urata (NCU), T. Enoto, K. Nakazawa, K. Makishima (Univ. of Tokyo),\nY. E. Nakagawa, T. Tamagawa (RIKEN), S. Hong (Nihon U.),\nS. Sugita (Nagoya U.)on behalf of the Suzaku WAM team, report:\n\n\nThe long GRB 091010 (Fermi trigger #276835391/091010113,\nvon Kienlin et al., GCN10018, SuperAGILE Donnarumma et al., GCN 10004)\ntriggered the Suzaku Wide-band  All-sky Monitor (WAM) in a energy  \nrange from\n  50 keV to 5 MeV at 02:43:09.50 UT (=T0).\n\nThe observed light curve shows a multi-peaked structure, starting at\nT0 s and ending at T0+7s, with a total duration (T90) of 6.5 s.\nThe fluence in 100 - 1000 keV was 6.22(+0.48,-0.42) x 10-6 erg/cm^2.\nThe 1-s peak flux measured from T0+1 s was 9.91(+0.89,-1.03) photons/s/ \ncm^2\nin the same energy range.\n\nPreliminary result shows that the time-averaged spectrum from\nT0-1s  to T0+7s is well fitted by a single power-law with\na photon index of 2.50 (+0.24,-0.22) (chi^2/d.o.f = 11.7/8).\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": 10023,
  "createdOn": 1255600582000,
  "email": "ohno@astro.isas.jaxa.jp",
  "subject": "GRB 091010: Suzaku WAM observation of the prompt emission",
  "submitter": "Masanori Ohno at ISAS/JAXA  <ohno@astro.isas.jaxa.jp>",
  "eventId": "GRB 091010"
}