GCN Circular 8336
K.L. Page (U. Leicester) & W.H. Baumgartner (GSFC/UMBC) report on behalf of the Swift-XRT team: We have analysed the XRT data obtained so far for GRB 081007 (Baumgartner et al., GCN Circ. 8330), consisting of 70 s of Windowed Timing (WT) mode and 8 ks of Photon Counting mode data. The UVOT-enhanced position was given by Beardmore et al. in GCN Circ. 8334 The X-ray light-curve showed an initial steep decay with alpha = 4.0 +/- 0.2 until about 230 s after the burst, at which time the slope flattened to 0.74 +/- 0.05. The WT spectrum can be fitted by a steep absorbed power-law, with Gamma = 3.00 +0.27/-0.24 and NH = (6.6 +/- 1.1)e21 cm^-2 at z = 0.5295 (Berger, Fox & Cenko, GCN Circ. 8335), in addition to the Galactic value (at z=0) of 1.4e20 cm^-2. The observed (unabsorbed) flux over this time (105-176 s after the trigger) is 3.21e-10 (1.01e-9) erg cm^-2 s^-1. If the decay continues at a slope of 0.74, the predicted count rate at 24 hours after the burst is 0.019 count s^-1, corresponding to an observed (unabsorbed) flux of 7.6e-13 (1.2e-12) erg cm^-2 s^-1. The results of the automatic analysis of the XRT data are available at http://www.swift.ac.uk/xrt_products This is an official product of the Swift-XRT team.