TITLE: GCN CIRCULAR NUMBER: 36533 SUBJECT: GRB 240513A: Swift-XRT afterglow detection DATE: 24/05/22 21:23:31 GMT FROM: Andrea Melandri at INAF-OAR <andrea.melandri@inaf.it> A. Melandri (INAF-OAR) reports on behalf of the Swift-XRT team: Swift-XRT has performed follow-up observations of the Fermi/LAT-detected burst GRB 240513A in a series of observations tiled on the sky. Three uncatalogued X-ray sources were reported in GCN 36478, of which one ("Source #6”) is fading with 2.7-sigma significance, and is therefore likely the GRB afterglow. The position of this source is RA, Dec=163.4548, -27.4114 which is equivalent to: RA (J2000): 10:53:49.16 Dec(J2000): -27:24:41.3 with an uncertainty of 5.1 arcsec (radius, 90% confidence). The results of the XRT-team automatic analysis are available at https://www.swift.ac.uk/xrt_curves/00021687/ This circular is an official product of the Swift-XRT team. View this GCN Circular online at https://gcn.nasa.gov/circulars/36533. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...