TITLE: GCN CIRCULAR NUMBER: 32385 SUBJECT: GRB 220710A: Swift-XRT afterglow detection DATE: 22/07/13 16:37:22 GMT FROM: Phil Evans at U of Leicester A.P. Beardmore (U. Leicester), M. Capalbi (INAF-IASFPA), M. Perri (SSDC & INAF-OAR), V. D'Elia (SSDC & INAF-OAR), J. D. Gropp (PSU), J.A. Kennea (PSU), A. Tohuvavohu (U. Toronto), J.P. Osborne (U. Leicester) and P.A. Evans (U. Leicester) report on behalf of the Swift-XRT team: Swift-XRT has performed follow-up observations of the Swift/BAT-GUANO-detected burst GRB 220710A, collecting 4.4 ks of Photon Counting (PC) mode data between T0+242.5 ks and T0+287.4 ks. An uncatalogued X-ray source is detected consistent with being within 197 arcsec of the Swift/BAT-GUANO position and is above the 2SXPS 3-sigma upper limit at this position, and is therefore likely the GRB afterglow. The position of this source is RA, Dec=221.5668, +20.6576 which is equivalent to: RA (J2000): 14:46:16.03 Dec(J2000): +20:39:27.3 with an uncertainty of 8.3 arcsec (radius, 90% confidence). This position is 83 arcsec from the Swift/BAT-GUANO position. We cannot determine at the present time whether the source is fading. The results of the XRT-team automatic analysis of the likely afterglow are at https://www.swift.ac.uk/ToO_GRBs/00021509/Source3.php. The results of the full analysis of the XRT observations are available at https://www.swift.ac.uk/ToO_GRBs/00021509. This circular is an official product of the Swift-XRT team.