• Spectra of quasiperiodic oscillations of galactic X-ray sources–dynamical regimes from a simple model

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      https://www.ias.ac.in/article/fulltext/joaa/018/01/0033-0037

    • Keywords

       

      Binaries: close; stars: oscillations; galaxy: centre; X-rays: stars

    • 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.

    • Author Affiliations

       

      Reza Tavakol1 Harinder P. Singh2

      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, New Delhi - 10021, India
    • Dates

       
  • Journal of Astrophysics and Astronomy | News

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