{
  "bibcode": "2012GCN.13088....1H",
  "body": "Y. Hanabata, T. Uehara, T. Kawano, K. Takaki, M. Mizuno, M. Ohno,\nY. Fukazawa (Hiroshima U.), W. Iwakiri, M. Tashiro, Y. Terada,\nT. Yasuda, K. Takahara, M. Asahina, S. Kobayashi, A. Sakamoto (Saitama U.),  \nS. Sugita (Nagoya U.), K. Yamaoka (Aoyama Gakuin U.), M. Kokubun, \nT. Takahashi (ISAS/JAXA), Y. E. Nakagawa (Waseda U.), N. Ohmori, M. Akiyama, \nM. Yamauchi (Univ. of Miyazaki), C-J. Chuang, Y. Urata, P. Tsai (NCU), \nK. Nakazawa, K. Makishima (Univ. of Tokyo), \non behalf of the Suzaku WAM team, report:\n\nThe long GRB 120316A (GBM trigger 353549464; Fermi-LAT detection:\nZheng & Akerlof, GCN 13070; IPN localization: Hurley at al., GCN 13073) \nwas detected by the Suzaku Wide-band All-sky Monitor (WAM) which\ncovers an energy range of 50 keV - 5 MeV at 00:11:02 UT (=T0).\n\nThe observed light curve shows a multi-peaked structure starting at T0,\nending at T0+28 s with a duration (T90) of about 24 seconds. The\nfluence in 100 - 1000 keV was 1.79 (-0.49, +0.07) x 10^-5 erg/cm^2. The\n1-s peak flux measured from T0+21 s was 2.75 (-1.02, +0.31)\nphotons/cm^2/s in the same energy range.\n\nPreliminary result shows that the time-averaged spectrum from \nT0 to T0+28 s is well fitted by a GRB Band model as follows.\nthe low-energy photon index alpha: -0.44 (-0.61, +0.89),\nthe high-energy photon index beta: -2.63 (-0.58, +0.31),\nand the peak energy Epeak: 530 (-76, +89) keV (chi^2/d.o.f = 12.6/12).\n\nDue to the brightness of this burst, a 3% systematic error was added\nfor low energy channels. All the quoted errors are at statistical 90%\nconfidence level.\n\nThe light curves for this burst will be available at:\nhttp://www.astro.isas.ac.jp/suzaku/HXD-WAM/WAM-GRB/grb/untrig/grb_table.html",
  "circularId": 13088,
  "createdOn": 1332489109000,
  "email": "hanabata@hep01.hepl.hiroshima-u.ac.jp",
  "subject": "GRB 120316A : Suzaku WAM observation of the prompt emission",
  "submitter": "Yoshitaka Hanabata at Hiroshima U  <hanabata@hep01.hepl.hiroshima-u.ac.jp>",
  "eventId": "GRB 120316A"
}