GCN Circular 35251
Subject
GRB 231129C: Swift-XRT afterglow detection
Date
2023-12-02T14:30:18Z (a year ago)
From
Phil Evans at U of Leicester <pae9@star.le.ac.uk>
Via
email
J. D. Gropp (PSU), S. Dichiara (PSU), K.L. Page (U. Leicester), A.P.
Beardmore (U. Leicester), M.G. Bernardini (INAF-OAB), E. Ambrosi
(INAF-IASFPA) , M. Capalbi (INAF-IASFPA), J.A. Kennea (PSU) and P.A.
Evans (U. Leicester) reports on behalf of the Swift-XRT team:
Swift-XRT has conducted further observations of the field of the
Fermi/GBM-detected burst GRB 231129C. The observations now extend from
T0+34.8 ks to T0+172.6 ks. The source previously reported, "Source 2",
is believed to be the afterglow. The position of this source is RA,
Dec=11.1769, -81.9936 which is equivalent to:
RA (J2000): 00:44:42.45
Dec(J2000): -81:59:37.0
with an uncertainty of 9.5 arcsec (radius, 90% confidence). This
position is 22.4 arcmin from the Fermi/GBM position. We cannot
determine at the present time whether the source is fading.
The results of the XRT-team automatic analysis are available at
http://www.swift.ac.uk/xrt_products/00021633.
The results of the full analysis of the tiled XRT observations are
available at https://www.swift.ac.uk/xrt_products/TILED_GRB00117.
This circular is an official product of the Swift-XRT team.