GRB 071126
GCN Circular 7133
Subject
GRB 071126: Enhanced Swift-XRT position
Date
2007-11-26T20:06:02Z (18 years ago)
From
Phil Evans at U of Leicester <pae9@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.
GCN Circular 7134
Subject
Disregard the "GRB 071126" position
Date
2007-11-26T20:19:26Z (18 years ago)
From
Phil Evans at U of Leicester <pae9@star.le.ac.uk>
P. A. Evans reports:
The UVOT-enhanced position just circulated for "GRB 071126" should be
ignored. We have reenabled the automatic production of GCN Circulars
announcing the UVOT-enhanced XRT positions of GRBs, in order to
disseminate these as rapidly as possible. Unfortunately, due to a minor
hole in the automated processing, the trigger on SGR 1900+14 was treated
like a GRB and the name deduced from the date.
We have now closed this hole in the processing, and apologise for any
confusion. Trigger 297434 was correctly identified as SGR 1900+14, and
was NOT a GRB.