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GCN Circular 29369

GRB 140104B: Swift-XRT refined Analysis
2021-01-29T14:51:41Z (3 years ago)
Phil Evans at U of Leicester <>
J.P. Osborne (U. Leicester), M. Capalbi (INAF-IASFPA), M. Perri (SSDC &
INAF-OAR), V. D'Elia (SSDC & INAF-OAR), D.N. Burrows (PSU), J. D. Gropp
(PSU), J.A. Kennea (PSU), K.L. Page (U. Leicester), A.P. Beardmore (U.
Leicester) and	report on behalf of the Swift-XRT team: report on
behalf of the Swift-XRT team:

We have analysed 9.6 ks of XRT data for the Fermi/LAT-detected burst
GRB 140104B, from 55.4 ks to 833.9 ks after the  Fermi/LAT trigger. The
data are entirely in Photon Counting (PC) mode. The refined XRT
position is RA, Dec = 218.7543, -9.0282 which is equivalent to:

RA (J2000): 14 35 01.03
Dec(J2000): -09 01 41.5

with an uncertainty of 4.0 arcsec (radius, 90% confidence). This
position is 8.4 arcmin from the Fermi/LAT position.  We cannot
determine at the present time whether the source is fading.

The results of the XRT-team automatic analysis are available at

This circular is an official product of the Swift-XRT team.
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