TITLE:   GCN CIRCULAR
NUMBER:  41706
SUBJECT: GRB 250904A: Prompt enhanced Swift-XRT position
DATE:    25/09/04 18:01:38 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 343 s of promptly downlinked XRT event data for GRB 250904A, we
find an enhanced XRT position of the afterglow: RA, Dec: 84.38029,
3.58466 which is equivalent to:
   RA (J2000)  = 05 37 31.27
   Dec (J2000) = +03 35 04.8
with an uncertainty of 2.2 arcseconds (radius, 90% confidence).
Analysis of the promptly available data is online at
http://www.swift.ac.uk/sper/1347179.

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.