{
  "bibcode": "2011GCN.12705....1I",
  "body": "W. Iwakiri, M. Tashiro, Y. Terada, T. Yasuda, K. Takahara, M. Asahina, \nS. Kobayashi, A. Sakamoto (Saitama U.) Y. Hanabata, T. Uehara, T. \nKawano, K. Takaki, M. Mizuno, M. Ohno, Y. Fukazawa (Hiroshima U.), S. \nSugita (Nagoya U.), K. Yamaoka (Aoyama Gakuin U.), M. Kokubun, T. \nTakahashi (ISAS/JAXA), Y. E. Nakagawa (Waseda U.), N. Ohmori, M. \nAkiyama, M. Yamauchi (Univ. of Miyazaki), C-J. Chuang, Y. Urata, P. Tsai \n(NCU), K. Nakazawa, K. Makishima (Univ. of Tokyo),\n\nThe long bright GRB 111215B (localized by IPN: Hurley et al., GCN 12698)\ntriggered the Suzaku Wide-band All-sky Monitor (WAM) which covers an\nenergy range of 50 keV - 5 MeV at 20:28:05.704 UT (=T0).\n\nThe observed light curve shows a multi-peaked structure starting at\nT0-0.5 s, followed by a long weak tail seen up to T0+75 s with a\nduration (T90) of about 61 seconds. The fluence in 100 - 1000 keV was\n2.81(-0.06, +0.09) x 10^-5 erg/cm^2.\nThe 1-s peak flux measured from T0+13 s was\n8.68 (-0.52, +0.36) photons/cm^2/s in the same energy range.\n\nPreliminary result shows that the time-averaged spectrum from T0-0.5 s \nto T0+74.5 s is well fitted by a single power-law with a photon index of\n2.05 (-0.06, +0.07) (chi^2 / d.o.f = 19.7/25).\n\nAll the quoted errors are at statistical 90% confidence level, in which\nthe systematic uncertainties are not included.\n\nThe light curves for this burst will be available at:\nhttp://www.astro.isas.jaxa.jp/suzaku/HXD-WAM/WAM-GRB/grb/trig/grb_table.html",
  "circularId": 12705,
  "createdOn": 1324361929000,
  "email": "tashiro@phy.saitama-u.ac.jp",
  "subject": "GRB 111215B: Suzaku WAM observation of the prompt emission",
  "submitter": "Makoto Tashiro at Saitama U/Swift  <tashiro@phy.saitama-u.ac.jp>",
  "eventId": "GRB 111215B"
}