TITLE: GCN CIRCULAR NUMBER: 39798 SUBJECT: GRB 250321A: Swift-XRT localisation DATE: 25/03/21 07:13:12 GMT FROM: K.L. Page at U Leicester klp5@leicester.ac.uk

K.L. Page (U. Leicester) reports on behalf of the Swift-XRT team:

Using 1.7 ks of XRT Photon Counting mode data starting 134 s after the BAT trigger on GRB 250321A (GCN Circ. 39794), an X-ray source was identified at a position of RA, Dec = 295.09873, 21.04146, which is equivalent to

RA (J2000): 19h 40m 23.7s Dec (J2000): 21d 02′ 29.3″

with an uncertainty of 4.2 arcsec.

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

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