GRBlog: GCN 9405

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GRB 090519: Enhanced Swift-XRT position	Goad et al.
	GCN 9405

SOURCE: GCN
TITLE: GCN CIRCULAR
NUMBER: 9405
SUBJECT: GRB 090519: Enhanced Swift-XRT position
DATE: 09/05/20 01:25:47 GMT
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 2178 s of XRT Photon Counting mode data and 1 UVOT images for GRB 090519, 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 = 142.27878, +0.18020 which is equivalent to: RA (J2000): 09h 29m 6.91s Dec (J2000): +00d 10' 48.7" with an uncertainty of 1.8 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, arXiv:0812.3662). This circular was automatically generated, and is an official product of the Swift-XRT team.

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