{
  "bibcode": "2008GCN..8721....1G",
  "body": "S. Golenetskii, R.Aptekar, E. Mazets, V. Pal'shin, D. Frederiks, P.\nOleynik, M. Ulanov, D. Svinkin, and T. Cline on behalf of the Konus-Wind\nteam, report:\n\nThe long GRB 081222 (Swift-BAT trigger #337914: Grupe et al., GCN 8691; \nFenimore et al., GCN 8709) triggered Konus-Wind at T0=17642.534 s UT \n(04:54:02.534).\n\nThe burst light curve shows a single pulse with a duration of ~12 s.\nThere is a hint of the weak tail detected by the Swift-BAT (Fenimore et \nal., GCN 8709) in the K-W G1 band (~20-80 keV).\n\nAs observed by Konus-Wind the burst\nhad a fluence of 1.32(-0.40, +0.48)x10^-5 erg/cm2,\nand a 256-ms peak flux measured from T0+4.688 s\nof 2.22(-0.73, +0.87)x10^-6 erg/cm2/s\n(both in the 20 keV - 1 MeV energy range).\n\nThe time-integrated spectrum of the burst\n(from T0 to T0+16.640 s) can be fitted (in the 20 keV - 1 MeV\nrange) by GRB (Band) model for which:\nthe low-energy photon index is alpha = -0.67(-0.33, +0.39),\nthe high energy photon index beta = -2.35(-1.25, +0.30),\nthe peak energy Ep = 165(-29, +47) keV (chi2 = 63.0/51 dof).\n\nAll the quoted errors are at the 90% confidence level.\n\nAssuming z = 2.77 (Cucchiara et al., GCN 8713; Graham et al., GCN 8718) \nand a standard cosmology model with H_0 = 70 km/s/Mpc, Omega_M = 0.27, \nOmega_\\Lambda = 0.73, the isotropic energy release E_iso ~2.4x10^53 erg, \nthe peak luminosity (L_iso)_max ~ 1.5x10^53 erg/s, and Ep_rest ~600 keV.\n\nThe Konus-Wind light curve of this GRB is available\nat http://www.ioffe.ru/LEA/GRBs/GRB081222_T17642/",
  "circularId": 8721,
  "createdOn": 1230128040000,
  "email": "val@mail.ioffe.ru",
  "subject": "Konus-Wind observation of GRB 081222",
  "submitter": "Valentin Pal'shin at Ioffe Inst  <val@mail.ioffe.ru>",
  "eventId": "GRB 081222"
}