TITLE: GCN CIRCULAR NUMBER: 28638 SUBJECT: GRB 201014A: Swift-XRT refined Analysis DATE: 20/10/16 01:59:34 GMT FROM: Phil Evans at U of Leicester M. Perri (ASDC), V. D'Elia (ASDC), A. D'Ai (INAF-IASFPA), D.N. Burrows (PSU), J. D. Gropp (PSU), J.A. Kennea (PSU), J.P. Osborne (U. Leicester), K.L. Page (U. Leicester), A.P. Beardmore (U. Leicester) and V.D’Elia report on behalf of the Swift-XRT team: We have analysed 5.1 ks of XRT data for GRB 201014A (D’Elia et al. GCN Circ. 28626), from 176 s to 69.0 ks after the BAT trigger. The data comprise 17 s in Windowed Timing (WT) mode with the remainder in Photon Counting (PC) mode. Using 1385 s of PC mode data and 2 UVOT images, we find an enhanced XRT position (using the XRT-UVOT alignment and matching UVOT field sources to the USNO-B1 catalogue): RA, Dec = 20.79619, +27.66024 which is equivalent to: RA (J2000): 01h 23m 11.09s Dec(J2000): +27d 39' 36.9" with an uncertainty of 1.8 arcsec (radius, 90% confidence). The light curve can be modelled with an initial power-law decay with an index of alpha=3.8 (+1.7, -0.7), followed by a break at T+360 s to an alpha of 0.58 (+0.09, -0.07). A spectrum formed from the PC mode data can be fitted with an absorbed power-law with a photon spectral index of 1.92 (+0.27, -0.24). The best-fitting absorption column is 1.1 (+0.8, -0.4) x 10^21 cm^-2, consistent with the Galactic value of 7.9 x 10^20 cm^-2 (Willingale et al. 2013). The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 3.5 x 10^-11 (4.3 x 10^-11) erg cm^-2 count^-1. A summary of the PC-mode spectrum is thus: Total column: 1.1 (+0.8, -0.4) x 10^21 cm^-2 Galactic foreground: 7.9 x 10^20 cm^-2 Excess significance: <1.6 sigma Photon index: 1.92 (+0.27, -0.24) The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/01000255. This circular is an official product of the Swift-XRT team.