TITLE: GCN CIRCULAR NUMBER: 40737 SUBJECT: GRB 250615A: Prompt enhanced Swift-XRT position DATE: 25/06/15 23:00:07 GMT FROM: Phil Evans at U of Leicester pae9@star.le.ac.uk

P.A. Evans (U. Leicester) reports on behalf of the Swift-XRT team:

Using 1.0 ks of promptly downlinked XRT event data for GRB 250615A, we find an enhanced XRT position of the afterglow: RA, Dec: 290.38555, 4.68527 which is equivalent to: RA (J2000) = 19 21 32.53 Dec (J2000) = +04 41 07.0 with an uncertainty of 2.0 arcseconds (radius, 90% confidence). Analysis of the promptly available data is online at http://www.swift.ac.uk/sper/1324646.

Position enhancement is described by Goad et al. (2007, A&A, 476, 1401) and Evans et al. (2009, MNRAS, 397, 1177).

This circular is an official product of the Swift-XRT team.

View this GCN Circular online at https://gcn.nasa.gov/circulars/40737. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...