[vsnet-grb-info 19223] GRB 170318B: Prompt enhanced Swift-XRT position
GCN Circulars
gcncirc at capella2.gsfc.nasa.gov
Sun Mar 19 01:17:48 JST 2017
TITLE: GCN CIRCULAR
NUMBER: 20909
SUBJECT: GRB 170318B: Prompt enhanced Swift-XRT position
DATE: 17/03/18 16:17:21 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 170318B, we find an
enhanced XRT position of the afterglow: RA, Dec: 284.3062, 6.2994 which
is equivalent to:
RA (J2000) = 18 57 13.49
Dec (J2000) = +06 17 57.9
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/743086.
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.
More information about the vsnet-grb-info
mailing list