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GCN Circular 10668

Subject

GRB 100424A: Prompt enhanced Swift-XRT position.

Date

2010-04-24T17:10:26Z (14 years ago)

From

Phil Evans at U of Leicester <pae9@star.le.ac.uk>

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

Using 1.4 ks of promptly downlinked XRT data and 1 promptly available UVOT image
we find an enhanced position of the XRT afterglow of GRB 100424A (Hoversten et
al., GCN Circ. 10667Not found
 
 
) of RA, Dec 209.4478, 1.5386 which is equivalent to:
   RA(J2000)  = 13h 57m 47.44s
   Dec(J2000) = +01d 32' 18.8"
with an uncertainty of 2.0 arcseconds (radius, 90% containment). Analysis of the
promptly available data is online at http://www.swift.ac.uk/sper/420367.

Position enhancement 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.