{
  "bibcode": "2011GCN.11659....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 110205A (Swift-BAT trigger #444643: Beardmore et al., GCN\n11629; Markwardt et al., GCN 11646) was detected by Konus-Wind in the\nwaiting mode.\n\nThe burst light curve shows a multipeaked pulse started at ~T0(BAT) with \na total duration of ~330 s. There is a weak pulse at ~T0(BAT)-1360 s \n(seen by the same detector which observed GRB 110205A; the detection \nsignificance is ~4.5 sigma in the G1+G2 (20-360 keV) band; the pulse \nduration is ~25 s), which might be a burst precursor. There is a hint of \na weak soft tail seen up to ~T0+1200 s.\n\nAs observed by Konus-Wind, the burst had a fluence of (3.66 +/- \n0.35)x10^-5 erg/cm2 and a 3-s peak flux measured from T0+211.6 s\nof (5.1 +/- 0.7)x10^-7 erg/cm2/s (both in the 20 - 1200 keV energy range).\n\nModeling the K-W 3-channel time-integrated spectrum (from T0 s to\nT0+330 s) by a power law with exponential cutoff model:\ndN/dE ~ (E^alpha)*exp(-E*(2+alpha)/Ep)\nyields alpha = -1.52 +/- 0.14, and Ep = 222 +/- 74 keV.\n\nAssuming z = 2.22 (Cenko & Hora, GCN 11638; Vreeswijk et al. GCN 11640) \nand a standard cosmology model with H_0 = 71 km/s/Mpc, Omega_M = 0.27, \nOmega_Lambda = 0.73, the isotropic energy release E_iso is (1.36 +/- \n0.13)x10^54 erg, the peak luminosity (L_iso)_max is (5.9 +/- 0.8)x10^51 \nerg/s, and Ep_rest is 715 +/- 238 keV.\n\nAll the quoted errors are estimated at the 1 sigma confidence level.\n\nThe K-W light curve of this burst is available at\nhttp://www.ioffe.rssi.ru/LEA/GRBs/GRB110205A/",
  "circularId": 11659,
  "createdOn": 1297078461000,
  "email": "val@mail.ioffe.ru",
  "subject": "Konus-Wind observation of GRB 110205A",
  "submitter": "Valentin Pal'shin at Ioffe Inst  <val@mail.ioffe.ru>",
  "eventId": "GRB 110205A"
}