Spectra of quasiperiodic oscillations of galactic X-ray sources–dynamical regimes from a simple model |
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| Authors: | Reza Tavakol Harinder P Singh |
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| Institution: | (1) Astronomy Unit, School of Mathematical Sciences, Queen Mary & Westfield College, University of London, UK;(2) Department of Physics, Sri Venkateswara College, University of Delhi, 10021 New Delhi, India |
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| Abstract: | We suggest that the dynamical regime(s) underlying quasi-periodic oscillations observed in the spectra of bright galactic-bulge
X-ray sources are nonlinear with a mixed phase space. The important feature of such regimes is that they are generic among
nonlinear Hamiltonian and nearly Hamiltonian systems of more than two degrees of freedom. We give a simple example of such
chaotic (deterministic) systems whose spectra share a number of features with those observed for quasiperiodic oscillations
of such sources. |
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| Keywords: | Binaries: close stars: oscillations galaxy: centre X-rays: stars |
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