Vertical oscillation of thin accretion discs as a candidate process for quasi-periodic oscillation

We draw attention to the importance of the characteristic periods of the vertical oscillation of accretion discs. The periods and stability of the vertical oscillation of the thin accretion discs surrounding a neutron star are calculated numerically with the use of the OPAL opacities - newly present...

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Bibliographic Details
Published inMonthly notices of the Royal Astronomical Society Vol. 276; no. 3; pp. 971 - 978
Main Authors Kanetake, R., Takeuti, M., Fukue, J.
Format Journal Article
LanguageEnglish
Published Oxford, UK Oxford University Press 01.10.1995
Subjects
accretion
accretion discs
galaxies: active
instabilities
stars: variables: other
X-rays: galaxies
X-rays: stars
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Summary:We draw attention to the importance of the characteristic periods of the vertical oscillation of accretion discs. The periods and stability of the vertical oscillation of the thin accretion discs surrounding a neutron star are calculated numerically with the use of the OPAL opacities - newly presented radiative opacities. The periods of the oscillations are similar to the time-scale of quasi-periodic oscillations (QPOs) of X-rays. The vertical oscillation is also studied for other accreting objects. It is suggested that the vertical oscillations of discs are the cause of QPOs.
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ISSN:0035-8711
1365-2966
DOI:10.1093/mnras/276.3.971