{
  "bibcode": "2005GCN..3630....1H",
  "body": "C. Hurkett, E. Rol, K. Page (U. Leicester), D. Burrows (PSU), J. Norris\n(GSFC), K. Hurley (Berkeley) and N. Gehrels (GSFC) report for the Swift\nXRT team:\n\nWe have analysed the XRT data for GRB 050716 (GCN 3623, Rol et al) taken\n104 seconds after the trigger. PSF fitting of the candidate afterglow in\nthe photon counting (PC) mode observations yields a refined position of\n(J2000)\n\nRA 22:34:20.5\nDec +38:40:57.1\n\nwith an uncertainty of 6 arcseconds (90% containment). This position is\nless than 1 arcsecond from the position reported in GCN 3624 (Kennea et\nal).\n\nXRT observations began in Windowed Timing (WT) mode 104 seconds after the\ntrigger and show a decline with a power-law decay index of 1.68\n+/- 0.04 with flares at approximately 177 and 386 seconds.\nThe decay index appears to stay the same at least until 6000 seconds after\nthe trigger.\n\nThe spectrum between 104 and 517 seconds after the trigger (WT data) has\nan average photon index of 1.32 (+/-0.04), with the absorption fixed at\nits Galactic value of 1.1e21 cm^-2. There is no evidence at the present\ntime for excess absorption. The mean unabsorbed flux in WT mode at 230s\n(logarithmic mean time) is 7.02 (+0.27/-0.24) x 1e-10 erg/cm^2/s in the\n0.5-10.0 keV energy range",
  "circularId": 3630,
  "createdOn": 1121542232000,
  "email": "cph9@star.le.ac.uk",
  "subject": "GRB 050716: Refined XRT analysis.",
  "submitter": "Cheryl Pauline Hurkett at Leicester U  <cph9@star.le.ac.uk>",
  "eventId": "GRB 050716"
}