[vsnet-grb-info 28209] GRB 210618A: Swift-XRT afterglow detection
GCN Circulars
gcncirc at capella2.gsfc.nasa.gov
Thu Jun 24 18:19:24 JST 2021
TITLE: GCN CIRCULAR
NUMBER: 30312
SUBJECT: GRB 210618A: Swift-XRT afterglow detection
DATE: 21/06/24 09:18:30 GMT
FROM: Maria Grazia Bernardini at INAF/Brera <grazia.bernardini at brera.inaf.it>
J.P. Osborne (U. Leicester), 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), A. Tohuvavohu (U.
Toronto), B. Sbarufatti (PSU) and P.A. Evans (U. Leicester) report on
behalf of the Swift-XRT team:
Swift-XRT has conducted further observations of the field of the
Swift-BAT-detected burst GRB 210618A (Bernardini et al. GCN Circ.
30250). The observations now extend from T0+3.7 ks to T0+424.9 ks.
Of the sources reported by Osborne et al. (GCN Circ. 30252), "Source 2"
is believed to be the afterglow. The position of this source is RA,
Dec=235.7698, +46.0691 which is equivalent to:
RA (J2000): 15:43:04.75
Dec(J2000): +46:04:08.6
with an uncertainty of 9.3 arcsec (radius, 90% confidence). This
position is 2.6 arcmin from the Swift-BAT position. The results of the
XRT-team automatic analysis are available at
http://www.swift.ac.uk/xrt_products/01056426.
The results of the full analysis of the XRT observations are available
at https://www.swift.ac.uk/ToO_GRBs/01056426.
This circular is an official product of the Swift-XRT team.
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