GCN Circular 4740
C. P. Hurkett, K. Page, E. Rol, J. Osborne, O. Godet and A. Beardmore (U Leicester) report on behalf of the Swift XRT team: We have analysed the Swift XRT data from the first orbit observation of GRB 060211A (Hurkett et al. GCN 4736), with a total Windowed Timing (WT) mode exposure of 195 seconds and Photon Counting (PC) mode exposure of 1040 seconds. The refined XRT position is: RA(J2000) = 03 53 32.8 Dec(J2000) = +21 29 21.0 This position is 3.9 arcseconds from the XRT position given in GCN 4736. We estimate an uncertainty of 3.7 arcseconds radius (90% containment). The 0.3-10 keV light curve in WT and PC mode starts 185 seconds from the BAT trigger. The lightcurve (after only one orbit) appears to exhibit a broken powerlaw behaviour, where both decay indices are steep. The indices are: alpha_1 = 4.14 +/- 0.11, which at 475 seconds (+48/-32) changes to a slower decay of alpha_2 = 2.26 (+0.26/-0.32). A preliminary spectral fit to the WT data gives a power law photon index of 1.94 +/- 0.07 in the 0.3-10 keV band, where Galactic absorption is assumed to be 1.25e21 cm^-2. An excess absorption component is noted at (7+/-2)e20 cm^-2. In the time range of 185-380 seconds after trigger, the estimated unabsorbed 0.3-10 keV flux is 1.19e-9 ergs/cm2/s. The observed 0.3-10.0 keV flux is 8.54e-10 erg/cm2/s. Because of the Malindi Gap, only one orbit of data has been analysed so far. We cannot accurately estimate the flux at T+24 hr yet. This circular is an official product of the Swift XRT Team.