[vsnet-grb-info 20405] GRB 180316A: Prompt enhanced Swift-XRT position
GCN Circulars
gcncirc at capella2.gsfc.nasa.gov
Fri Mar 16 14:31:50 JST 2018
TITLE: GCN CIRCULAR
NUMBER: 22501
SUBJECT: GRB 180316A: Prompt enhanced Swift-XRT position
DATE: 18/03/16 05:31:08 GMT
FROM: Phil Evans at U of Leicester <pae9 at leicester.ac.uk>
P.A. Evans (U. Leicester) reports on behalf of the Swift-XRT team:
Using promptly downlinked XRT event data for GRB 180316A, we find an
enhanced XRT position of the afterglow: RA, Dec: 265.4289, 0.7483 which
is equivalent to:
RA (J2000) = 17 41 42.94
Dec (J2000) = +00 44 54.0
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/814677.
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.
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