TITLE: GCN CIRCULAR NUMBER: 32436 SUBJECT: GRB 220730A: Swift-XRT afterglow detection DATE: 22/08/01 14:07:50 GMT FROM: Phil Evans at U of Leicester S. Dichiara (PSU), A. D'Ai (INAF-IASFPA), D.N. Burrows (PSU), J. D. Gropp (PSU), J.A. Kennea (PSU), K.L. Page (U. Leicester), A.P. Beardmore (U. Leicester), A. Melandri (INAF-OAB), T. Sbarrato (INAF-OAB) 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 Swift-BAT-detected burst GRB 220730A (Dichiara et al. GCN Circ. 32431). The observations now extend from T0+119 s to T0+124.8 ks. Of the sources reported by D'Ai et al. (GCN Circ. 32434), "Source 5" is fading with >3-sigma significance and is believed to be the afterglow. The position of this source is RA, Dec=225.0143, -69.4959 which is equivalent to: RA (J2000): 15:00:3.43 Dec(J2000): -69:29:45.4 with an uncertainty of 6.6 arcsec (radius, 90% confidence). This position is 9.3 arcsec from the Swift-BAT position. The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/01118357. The results of the full analysis of the XRT observations are available at https://www.swift.ac.uk/ToO_GRBs/01118357. This circular is an official product of the Swift-XRT team.