[vsnet-grb-info 5464] GRB 071126: Enhanced Swift-XRT position

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  7133
SUBJECT: GRB 071126: Enhanced Swift-XRT position
DATE:    07/11/26 20:06:02 GMT
FROM:    Phil Evans at U of Leicester  <pae9 at star.le.ac.uk>

M.R. Goad, J.P. Osborne, A.P. Beardmore and P.A. Evans (U. Leicester) 
report on behalf of the Swift-XRT team.

Using 799 s of overlapping XRT Photon Counting mode and UVOT
V-band data for GRB 071126, we find an astrometrically corrected X-ray
position (using the XRT-UVOT alignment and matching UVOT field sources
to the USNO-B1 catalogue): RA, Dec = 286.80973, +9.32180 which is equivalent
to:

RA (J2000): 19d 07' 14.34"
Dec (J2000): +09h 19m 18.5s

with an uncertainty of 2.3 arcsec (radius, 90% confidence).

This position may be improved as more data are received. The latest position
can be viewed at http://www.swift.ac.uk/xrt_positions. Position enhancement is
described by Goad et al. (2007, astro-ph/0708.0986
http://www.swift.ac.uk/xrt_positions/Goad.pdf).

This circular was automatically generated, and is an official product of the
Swift-XRT team.