Local Analysis of Nonlinear Oscillations of Thin Accretion Disks

preprint2008arXivOpen access

Abstract

We calculated the coupling coefficients for non-linear, quasi-local oscillatory modes of thin accretion disks. We found that several of them are non-zero. Mode coupling is a necessary condition for a resonance, and thus our results may be relevant for the recently discussed QPO resonance model.

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