{
  "bibcode": "2009GCN..9703....1G",
  "body": "S. Golenetskii, R.Aptekar, D. Frederiks, E. Mazets, V. Pal'shin,\nP. Oleynik, M. Ulanov, and D. Svinkin on behalf of\nthe Konus-Wind and Konus-RF teams, and\nT. Cline on behalf of the Konus-Wind team, report:\n\nThe long GRB 090718B (Fermi/GMM trigger 269633864/09071876;\nA.J. van der Horst, GCN 9690)\ntriggered Konus-RF instrument onboard CORONAS-PHOTON s/c\nat T0=65863.878 s UT (18:17:43.878),\nand Konus-Wind\nat T0=65882.144 s UT (18:18:02.144),\n\nThe burst light curve shows a smooth structure\nwith a duration of ~35 s. The Konus-RF and Konus-Wind\nlight curves of this GRB are available at\nhttp://www.ioffe.ru/LEA/GRBs/GRB090718_T65882/\n\nAs observed by Konus-RF the burst\nhad a fluence of 2.6(-0.13, +0.13)x10-5 erg/cm2,\nand a 64-ms peak flux measured from T0+20.904 s\nof 5.0(-0.24, +0.24)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 T0-2.0 to T0+34.0 s) is well fit\n(in the 20 keV - 1 MeV range) by GRB (Band) model\nfor which:\nthe low-energy photon index alpha = -1.3 � 0.1,\nthe high energy photon index beta = -4.6( < -2.2),\nthe peak energy Ep = 250(-50, +35) keV (chi2 = 126/106 dof).\n\nThe spectrum of the burst at the maximum count rate\n(from T0+20.5 to T0+21.0 s) is well fit\n(in the 20 keV - 1 MeV range) by GRB (Band) model\nfor which:\nthe low-energy photon index alpha = -0.83 � 0.13,\nthe high energy photon index beta = -3.0( < -2.3),\nthe peak energy Ep = 245(-40, +45) keV (chi2 = 51/60 dof).\n\nDue to uncertainties in the burst incident angle\nthe quoted values are preliminary.\nAll the quoted errors are at the 90% confidence level.\n--",
  "circularId": 9703,
  "createdOn": 1248433684000,
  "email": "fred@mail.ioffe.ru",
  "subject": "Konus-RF and Konus-Wind observations of GRB 090718B",
  "submitter": "Dmitry Frederiks at Ioffe Institute  <fred@mail.ioffe.ru>",
  "eventId": "GRB 090718B"
}