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    Epicyclic frequencies of Keplerian motion in Kerr spacetimes

    Zdeněk Stuchlík · Prosinec 01, 2005 · Fyzika · 0 comments
    0

    Publication date: Dec 2005

    Abstract:
    Relativistic Keplerian orbital frequency (νK) and the related
    epicyclic frequencies (radial νr, vertical νθ)
    play an important role in the physics of accretion discs orbiting Kerr
    black holes. We examine in detail their properties in Kerr spacetimes
    and discuss some possible observational implications resulting from
    their behaviour in the black hole case. Characteristics of the
    fundamental orbital frequencies of Keplerian motion are also analysed
    with the intention to find the phenomena which could observationally
    distinguish a hypothetical naked singularity from black holes. We
    explore the significant differences in behaviour of the epicyclic
    frequencies. These suggest that oscillations of discs orbiting Kerr
    black holes and naked singularities could be very different, and the
    information, given through X-ray variability of the source, could
    distinguish between the naked singularities and the black holes in
    general.

    Authors:
    Török, Gabriel; Stuchlík, Zdeněk;

    https://ui.adsabs.harvard.edu/abs/2005ragt.meet..315T

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