TITLE:   GCN CIRCULAR
NUMBER:  39971
SUBJECT: GRB 250329B: Swift-XRT confirmation of fading
DATE:    25/03/31 12:43:42 GMT
FROM:    P.A. Evans at U. Leicester <pae9@leicester.ac.uk>

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

Swift-XRT has carried out a second observation of GRB 250329B. The X-ray source reported by Beardmore et al. (GCN Circ. 39939) has faded, with a decay index of 1.19 (+0.47, -0.28). We therefore confirm that it is the afterglow of this GRB.

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