[vsnet-grb-info 24010] GRB 191031C: Prompt enhanced Swift-XRT position

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  26109
SUBJECT: GRB 191031C: Prompt enhanced Swift-XRT position
DATE:    19/10/31 19:20:12 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 191031C, we find an
enhanced XRT position of the afterglow: RA, Dec: 115.8709, -62.3251
which is equivalent to:
   RA (J2000)  = 07 43 29.01
   Dec (J2000) = -62 19 30.5
with an uncertainty of 2.0 arcseconds (radius, 90% confidence).
Analysis of the promptly available data is online at
http://www.swift.ac.uk/sper/932595.

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.