{
  "bibcode": "2010GCN.10888....1P",
  "body": "K.L. Page (U. Leicester) and S. T. Holland (CRESST/USRA/GSFC) report on behalf \nof the Swift-XRT team:\n\nWe have analysed 16 ks of XRT data for GRB 100625A (Holland et al. GCN Circ. \n10884), from 61 s to 35.4 ks after the BAT trigger. The data are entirely in \nPhoton Counting (PC) mode. The enhanced XRT position for this burst was given \nby Goad et al. (GCN. Circ 10886).\n\nThe light curve can be modelled with a power-law decay with a decay index \nof alpha=1.34 (+0.44, -0.26), with a small flare in the first orbit of \ndata.\n\nA spectrum formed from the PC mode data can be fitted with an absorbed \npower-law with a photon spectral index of 2.34 (+0.31, -0.23). The best-fitting \nabsorption column is consistent with the Galactic value of 2.1 x 10^20 cm^-2 \n(Kalberla et al. 2005). The counts to observed (unabsorbed) 0.3-10 keV flux \nconversion factor deduced from this spectrum is 3.2 x 10^-11 (3.6 x 10^-11) erg \ncm^-2 count^-1.\n\nIf the light curve continues to decay with a power-law decay index of \n1.34, the count rate at T+24 hours will be 1.1 x 10^-4 count s^-1, \ncorresponding to an observed (unabsorbed) 0.3-10 keV flux of 3.5 x 10^-15 \n(3.9 x 10^-15) erg cm^-2 s^-1.\n\nThe results of the XRT-team automatic analysis are available at \nhttp://www.swift.ac.uk/xrt_products/00425647.\n\nThis circular is an official product of the Swift-XRT team.",
  "circularId": 10888,
  "createdOn": 1277541267000,
  "email": "kpa@star.le.ac.uk",
  "subject": "GRB 100625A: Swift-XRT Team refined analysis",
  "submitter": "Kim Page at U.of Leicester  <kpa@star.le.ac.uk>",
  "eventId": "GRB 100625A"
}