TITLE: GCN CIRCULAR NUMBER: 14681 SUBJECT: GRB 130518A: Confirmation of the X-ray afterglow. DATE: 13/05/20 09:05:11 GMT FROM: Phil Evans at U of Leicester P.A. Evans (U.Leicester), M.C. Stroh (PSU) and M. H. Siegel (PSU) report on behalf of the Swift-XRT team: Swift has performed a second observation of GRB 130518A. We collected 1 ks of data, starting 122.5 ks after the Fermi trigger (Xiong, GCN Circ. 14674; Omodei & McEnery, GCN Circ. 14675). The XRT source reported by Evans et al. (GCN Circ. 14678) is detected at a level of 0.013 ± 0.005 ct/sec, significantly below the level in the previous observations, confirming that it has faded. The best-fitting power-law decay index is 1.1 (+0.5, -0.3). We therefore conclude that this object is the afterglow of GRB 130518A. This circular is an official product of the Swift-XRT team.