{
  "bibcode": "2013GCN.14702....1P",
  "body": "V. Pal'shin, S. Golenetskii, R.Aptekar, E. Mazets, D. Frederiks, D. \nSvinkin, M. Ulanov, and T. Cline on behalf of the Konus-Wind team,\n\nT. Sakamoto (AGU), S. D. Barthelmy (GSFC), W. Baumgartner (GSFC/UMBC), \nJ. Cummings (GSFC/UMBC), E. Fenimore (LANL), N. Gehrels (GSFC),\nH. Krimm (GSFC/USRA), C. Markwardt (GSFC), D. Palmer (LANL), M. \nStamatikos (OSU) and T. Ukwatta (GWU)\n\nreport:\n\nWe performed the Konus-Wind and the Swift/BAT joint spectral analysis of \nGRB 130514A (Swift/BAT trigger #555821: Sonbas et al., GCN Circ. 14632, \nUkwatta et al. GCN Circ. 14636). Since the Konus-Wind observed this GRB \nin the waiting mode, we only have 3 channel spectral data for the \nKonus-Wind which cover the energy range from 20 keV to 1.2 MeV.  The\njoint spectral analysis of the Konus-Wind and the Swift/BAT data allows \nus to derive the broad-band spectral parameters of this burst.\n\nThe time interval of the spectral data for each instrument is chosen \nfrom T0(BAT)-5.1 to T0(BAT)+153.9 s where T0(BAT) is the trigger time of \nBAT at 07:13:41 UTC. This interval comprises whole burst as observed by \nKonus-Wind and contains 87% of the total fluence in the 15-150 keV as \nobserved by BAT (Ukwatta et al. GCN Circ. 14636).\n\nThe energy ranges which we used in the joint spectral analysis are \n20-1200 keV and 14-150 keV for the Konus-Wind and the Swift/BAT \nrespectively.  The spectral data of two instruments are fitted with the \nspectral model multiplied by the constant factor to take into account \nthe systematic effective area uncertainties in the response matrices of \neach instrument.\n\nThe spectrum is well fitted with a power-law with exponential cutoff \nmodel: dN/dE ~ E^{alpha}*exp(-(2+alpha)*E/Epeak). No systematic residual \nfrom the best fit model is seen in the spectral data of each instrument. \nThe BAT constant factor is 0.83(-0.08,+0.10) (the KW constant factor is \nfixed to 1). The best fit spectral parameters are: alpha = \n-1.44(-0.14,+0.17) and Epeak = 110(-21,+42) keV (chi2/dof = 41.9/57). \nThe best fit spectral parameters for the GRB (Band) model fixing beta = \n-2.5 are:  alpha = -1.44(-0.15,+0.17), and Epeak = 108(-21,+45)  keV \n(chi2/dof = 43.6/57). The energy fluence in the 15-1200 keV band \ncalculated by a power-law with exponential cutoff model for this 159 s \ninterval is 1.40(-0.16,+0.21)x10^-5 erg/cm2.\n\nAssuming a photo-z of 3.6 (Schmidl, Kann, and Greiner GCN Circ. 14634) \nand a standard cosmology model with H_0 = 71 km/s/Mpc, Omega_M = 0.27, \nOmega_Lambda = 0.73, the isotropic energy release is E_iso = \n4.95(-0.67,+0.85)x10^53 erg in 1 keV to 10 MeV at the GRB rest frame \nextrapolating the best exponential cutoff function fit.\n\nAll the quoted errors are at the 90% confidence level.\n\nThe Konus-Wind light curve of this GRB is available at\nhttp://www.ioffe.ru/LEA/GRBs/GRB130514A/",
  "circularId": 14702,
  "createdOn": 1369427097000,
  "email": "val@mail.ioffe.ru",
  "subject": "GRB 130514A: Konus-Wind and Swift/BAT joint spectral analysis",
  "submitter": "Valentin Pal'shin at Ioffe Inst  <val@mail.ioffe.ru>",
  "eventId": "GRB 130514A"
}