{
  "bibcode": "2013GCN.14253....1S",
  "body": "A. Sakamoto, M. Tashiro, Y. Terada, W. Iwakiri, T. Yasuda, K. Takahara,\nM. Asahina, S. Kobayashi, Y. Ishida, H. Ueno, S. Sugimoto (Saitama U.),\nM. Akiyama, N. Ohmori, E. Mochinaga, M. Yamauchi (Univ. of Miyazaki),\nK. Yamaoka, M. Kokubun, T. Takahashi (ISAS/JAXA), Y. Hanabata,\nT. Kawano, K. Takaki, R. Nakamura, Y.Tanaka, M. Ohno, Y. Fukazawa\n(Hiroshima U.), S. Sugita (Nagoya U.), Y. E. Nakagawa (Waseda U.),\nY. Urata, P. Tsai (NCU), K. Nakazawa, K. Makishima (Univ. of Tokyo),\non behalf of the Suzaku WAM team, report:\n\nThe long GRB 130219A (Collazzi, GCN 14243; Hurley et al., GCN 14246) was\ndetected by the Suzaku Wide-band All-sky Monitor (WAM) which covers an\nenergy range of 50 keV - 5 MeV at 2013/02/19 18:35:51.73 UT (=T0).\n\nThe observed light curve exhibited two separated pulses; which are\nthe 1st short pulse from T0+1 s to T0+3 s,\nand the following 2nd long pulse from T0+74 s to T0+96 s,\nwith a total duration of 96 s. The fluence in 100 - 1000 keV was\n2.06 (+0.16/-0.36) x 10^-5 erg/cm^2. The 1-s peak flux measured from\nT0+81 s was 5.03 (+0.57/-0.72) photons/cm^2/s in 100 - 1000 keV.\n\nPreliminary result shows that the time-averaged spectrum from T0-2s to\nT0+98s is marginally described as a power-law with exponential cutoff\nmodel:\ndN/dE ~ E^{-alpha} * exp(-(2-alpha)*E/Epeak) with\nalpha 1.23(-0.45 +0.39), and\nEpeak 502(-96 +151) keV (chi^2/d.o.f. = 33.2/24).\n\nOn the other hand, the two separate pulse spectra are well fitted\nby different models. The 1st pulse spectrum is well fitted by a single\npower-law with a photon index of 2.12(+0.57/-0.37) (chi^2/d.o.f = 21.6/25).\nThe 2nd pulse spectrum is well fitted by a GRB Band model:\n  the low-energy photon index alpha: -1.16(-0.35 +0.49),\n  the high-energy photon index beta: -2.5(fixed),\n  and the peak energy Epeak: 515(-84, +145) keV (chi^2/d.o.f = 26.1/24).\n\nAll the quoted errors are at statistical 90% confidence level,\n  in which the systematic uncertainties are not included.\n\nThe light curves for this burst will be available at:\n \nhttp://www.astro.isas.jaxa.jp/suzaku/HXD-WAM/WAM-GRB/grb/trig/grb_table.html",
  "circularId": 14253,
  "createdOn": 1362133278000,
  "email": "tashiro@phy.saitama-u.ac.jp",
  "eventId": "GRB 130219A",
  "subject": "GRB 130219A: Suzaku WAM observation of the prompt emission",
  "submitter": "Makoto Tashiro at Saitama U/Swift  <tashiro@phy.saitama-u.ac.jp>"
}