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GCN Circular 26109

GRB 191031C: Prompt enhanced Swift-XRT position
2019-10-31T19:20:12Z (5 years ago)
Phil Evans at U of Leicester <>
P.A. Evans (U. Leicester) reports on behalf of the Swift-XRT team:

Using  promptly downlinked XRT event data for GRB 191031C, we find an
enhanced XRT position of the afterglow: RA, Dec: 115.8709, -62.3251
which is equivalent to:
   RA (J2000)  = 07 43 29.01
   Dec (J2000) = -62 19 30.5
with an uncertainty of 2.0 arcseconds (radius, 90% confidence).
Analysis of the promptly available data is online at

Position enhancement is 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.
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