{
  "bibcode": "2011GCN.12075....1A",
  "body": "M. Akiyama, N. Ohmori, M. Yamauchi (Univ. of Miyazaki),\nM. Ohno, T. Uehara, Y. Hanabata, T. Takahashi, Y. Fukazawa (Hiroshima U.),\nS. Sugita (Nagoya U.), K. Yamaoka (Aoyama Gakuin U.), N. Vasquez (Tokyo Tech.),\nY. Terada, M. Tashiro, W. Iwakiri, K. Takahara, T. Yasuda (Saitama U.),\nM. Kokubun, T. Takahashi (ISAS/JAXA), Y. E. Nakagawa (Waseda U.),\nY. Urata, P. Tsai, C-J. Chuang (NCU), K. Nakazawa, K. Makishima (Univ.\nof Tokyo), on behalf of the Suzaku WAM team, report:\n\nThe bright GRB 110604A (IPN and Swift/BAT ; Barthelmy et al., GCN 12063) \ntriggered the Suzaku Wide-band All-sky Monitor (WAM) which covers an energy\nrange of 50 keV - 5 MeV at 14:49:42 UT (=T0).\n\nThe observed light curve shows a multi-peaked structure starting at\nT0-13s, ending at T0+31s with a duration (T90) of about 27 seconds. There \nis a possible precursor at T0-13s with a duration of about 1 second. The\nfluence in 100 - 1000 keV was 1.96 (-0.12, +0.10) x10^-5 erg/cm^2.\nThe 1-s peak flux measured from T0+2s was 7.68 (-0.98, +0.75) photons/cm^2/s\nin the same energy range.\n\nPreliminary result shows that the time-averaged spectrum including the precursor\nfrom T0-13s to T0+31s is well fitted by a single power-law with a photon index\nof 2.49 (-0.15, +0.17) (chi^2/d.o.f = 14.0/15).\nAll the quoted errors are at statistical 90% confidence level.\n\nThe light curves for this burst are available at:\nhttp://www.astro.isas.jaxa.jp/suzaku/HXD-WAM/WAM-GRB/grb/trig/grb_table.html",
  "circularId": 12075,
  "createdOn": 1308219384000,
  "email": "ohmori@astro.miyazaki-u.ac.jp",
  "subject": "GRB 110604A: Suzaku WAM observation of the prompt emission",
  "submitter": "Norisuke Ohmori at Miyazaki U  <ohmori@astro.miyazaki-u.ac.jp>",
  "eventId": "GRB 110604A"
}