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X-ray variability in the quiescent state of Cen X-4
Astronomy and Astrophysics, (1997)
Abstract
We report on a ROSAT-HRI observation of the soft X-ray transient Cen X-4
during quiescence. We discover a variation in the flux by a factor of 3 in less
than four days. This relatively fast variation, the first observed from a
quiescent soft X-ray transient, rules out some of the emission mechanisms that
have been proposed for the quiesce...More
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