The orbital resonance model for twin peak kHz QPOs

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dc.creatorAbramowicz, Marek A.
dc.creatorKluzniak, Wlodek
dc.creatorStuchlik, Zdenek
dc.creatorTorok, Gabriel
dc.date2004-01-22
dc.date.accessioned2026-07-07T02:11:58Z
dc.date.available2026-07-07T02:11:58Z
dc.descriptionMany Galactic black hole and neutron star sources in low X-ray mass binaries show QPOs (quasi periodic oscillations) in their observed X-ray fluxes, i.e. peaks in the Fourier variability power spectra. Pairs of twin peaks are observed, and in black-hole systems their frequencies (upp), (down) are in rational ratios. For example, in all four microquasars with twin peaks observed, (upp):(down) = 3:2. The rational ratios have been postulated in a model that explained twin peak QPOs as a non-linear resonance between modes of accretion disk oscillations. For those microquasars where the mass of the X-ray source is known, we determine the black-hole spin, following from the observed QPO frequencies within various models of resonance.
dc.description8 pages, 16 figures
dc.identifierhttps://arxiv.org/abs/astro-ph/0401464
dc.identifierhttp://arxiv.org/abs/astro-ph/0401464
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/7296
dc.subjectAstrophysics
dc.titleThe orbital resonance model for twin peak kHz QPOs
dc.typetext

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