{
  "bibcode": "2008GCN..7900....1P",
  "body": "D. Perez (U. Leicester-U. Jaen), K.L. Page (U. Leicester), T. N. Ukwatta\n(GSFC/GWU), report on behalf of the Swift-XRT team:\n\n\nWe have analysed the first three orbits of data obtained for GRB 080623\n(Ukwatta et al., GCN Circ. 7894), covering 4.3ks of Photon Counting (PC)\nmode data. The UVOT-enhanced XRT position was given by Beardmore et al.\nin GCN Circ. 7898.\n\nThe light-curve can be fitted with a single powerlaw with a decay of\nalpha ~1.0 +/- 0.1.\n\n\nThe first three orbits of PC data can be modelled with an absorbed\npowerlaw, with Gamma = 2.03 +/- 0.14 and total NH = (0.37 +/-\n0.05)x10^22 cm^-2, in excess of the Galactic value of 0.26x10^22 cm^-2.\n\nThe observed (unabsorbed) flux over this time interval is 8.05 x10^-12\n(1.34x10^-11) erg cm^-2 s^-1.  The counts to observed flux conversion is\n5.3x10^-11 erg cm^-2 count^-1.\n\nIf the light-curve continues to decay at alpha ~ 1.0, the count rate at\n24 hours is predicted to be 0.0086 count s^-1, corresponding to an\nobserved flux of 4.5x10^-13 erg cm^-2 s^-1.\n\nThis is an official product of the Swift-XRT team.",
  "circularId": 7900,
  "createdOn": 1214251609000,
  "email": "dpr9@star.le.ac.uk",
  "subject": "GRB 080623: Swift-XRT refined analysis",
  "submitter": "Dolores Perez-Ramirez at U.Leicester  <dpr9@star.le.ac.uk>",
  "eventId": "GRB 080623"
}