GCN Circular 3463
Subject
XRF 050522: Swift XRT refined analysis
Date
2005-05-23T21:37:15Z (19 years ago)
From
David Burrows at PSU/Swift <dxb15@psu.edu>
M. Capalbi, M. Perri, P. Giommi (ASDC),
J. A. Kennea, D. N. Burrows, (PSU), F. Marshall,
N. Gehrels (NASA/GSFC) report on behalf of the Swift XRT team:
We have analyzed the Swift XRT data from the INTEGRAL XRF 050522
(Gotz et al., GCN 3446). Analysis of 10077 seconds of Photon Counting mode
data reveals a weak uncataloged X-ray source within the INTEGRAL error circle.
The probability that the source is a fluctuation of the background is about
5.6E-5.
The source coordinates are:
RA(J2000) = 13 20 35.0
Dec(J2000) = +24 47 18
We estimate an uncertainty of 6 arcseconds radius (90% containment).
This source is located 12 arcseconds from the INTEGRAL position reported
in GCN 3446. The count rate in the 0.3-10 keV band is 1.6E-03+/-0.5E-03.
We cannot yet determine whether this X-ray source is fading.
We confirm that the X-ray source outside the INTEGRAL error circle
reported previously on the basis of a preliminary analysis (Kennea et al.,
GCN 3452) is not fading and is no longer considered an afterglow candidate.
Further XRT observations are planned.