GCN Circular 20905
Subject
GRB 170318A: Prompt enhanced Swift-XRT position
Date
2017-03-18T13:00:10Z (8 years ago)
From
Phil Evans at U of Leicester <pae9@leicester.ac.uk>
P.A. Evans (U. Leicester) reports on behalf of the Swift-XRT team:
Using promptly downlinked XRT event data for GRB 170318A, we find an
enhanced XRT position of the afterglow: RA, Dec: 305.6668, 28.4066
which is equivalent to:
RA (J2000) = 20 22 40.03
Dec (J2000) = +28 24 23.7
with an uncertainty of 2.1 arcseconds (radius, 90% confidence).
Analysis of the promptly available data is online at
http://www.swift.ac.uk/sper/743065.
Position enhancement is 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.