[vsnet-grb-info 10696] GRB 110709A: Prompt enhanced Swift-XRT position

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  12119
SUBJECT: GRB 110709A: Prompt enhanced Swift-XRT position
DATE:    11/07/09 16:26:49 GMT
FROM:    Phil Evans at U of Leicester  <pae9 at star.le.ac.uk>

P.A. Evans (U. Leicester) reports on behalf of the Swift-XRT team:

Using  promptly downlinked XRT event data for GRB 110709A, we find an
enhanced XRT position of the afterglow: RA, Dec: 238.8911, 40.9244
which is equivalent to:
   RA (J2000)  = 15 55 33.86
   Dec (J2000) = +40 55 28.0
with an uncertainty of 2.0 arc sec (radius, 90% confidence). Analysis
of the promptly available data is online at
http://www.swift.ac.uk/sper/456939.

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.