X-ray variability in the quiescent state of Cen X-4

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dc.creatorCampana, S.
dc.creatorMereghetti, S.
dc.creatorStella, L.
dc.creatorColpi, M.
dc.date1997-01-30
dc.date.accessioned2026-07-07T02:22:50Z
dc.date.available2026-07-07T02:22:50Z
dc.descriptionWe 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 quiescent flux. Accretion either onto the neutron star surface or onto the magnetospheric boundary is clearly favored.
dc.description2 pages and 1 figure, latex (A&A macro); accepted for publication in A&A
dc.identifierhttps://arxiv.org/abs/astro-ph/9701234
dc.identifierhttp://arxiv.org/abs/astro-ph/9701234
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/11023
dc.subjectAstrophysics
dc.titleX-ray variability in the quiescent state of Cen X-4
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