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

      Reza Tavakol Harinder P. Singh

      Volume 18 Issue 1 June 1997 pp 33-37

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      Permanent link:
      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

       
      Published
      June 1997
      Manuscript received
      4 May 1996
      Accepted
      5 July 1996

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