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GCN Circular 33924

Subject
GRB 230606A: Enhanced Swift-XRT position
Date
2023-06-06T06:08:02Z (a year 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 1707 s of XRT Photon Counting mode data and 4 UVOT
images for GRB 230606A, 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 = 166.80951, +36.48425 which is equivalent
to:

RA (J2000): 11h 07m 14.28s
Dec (J2000): +36d 29' 03.3"

with an uncertainty of 2.2 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, A&A, 476, 1401) and Evans
et al. (2009, MNRAS, 397, 1177).

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


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