TITLE: GCN CIRCULAR NUMBER: 28648 SUBJECT: GRB 201008A: Swift-XRT afterglow detection DATE: 20/10/16 07:33:35 GMT FROM: Phil Evans at U of Leicester K.L. Page (U. Leicester), A.P. Beardmore (U. Leicester), M.G. Bernardini (INAF-OAB), E. Ambrosi (INAF-IASFPA) , M. Capalbi (INAF-IASFPA), J.A. Kennea (PSU), A. Tohuvavohu (U. Toronto), B. Sbarufatti (PSU) and P.A. Evans (U. Leicester) report on behalf of the Swift-XRT team: Swift-XRT has conducted further observations of the field of the Fermi/GBM and Swift-BAT/GUANO detected burst GRB 201008A (DeLaunay et al. GCN Circ. 28583). The observations now extend from T0+47.0 ks to T0+650.8 ks. Of the sources reported by Page et al. (GCN Circ. 28587), "Source 4" is fading with 3-sigma significance, and is therefore likely the GRB afterglow. The position of this source is RA, Dec=161.8588, +46.1019 which is equivalent to: RA (J2000): 10:47:26.10 Dec(J2000): +46:06:06.9 with an uncertainty of 4.8 arcsec (radius, 90% confidence). This position is 4.8 arcmin from the BAT/GUANO position. The source is fading with alpha >0.8. The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00021034. The results of the full analysis of the XRT observations are available at https://www.swift.ac.uk/ToO_GRBs/00021034. This circular is an official product of the Swift-XRT team.