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Pulsational Instability of Accretion Disks around Compact Objects

Published online by Cambridge University Press:  12 April 2016

T. Okuda  and
S. Mineshige
T. Okuda
Affiliation:
Hakodate College, Hokkaido Univ. of Education, Hakodate 040, Japan
S. Mineshige
Affiliation:
Department of Physics, Ibaraki Univ., Mito 310, Japan

Abstract

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Linear analysis shows that radial oscillations in accretion disks around compact object are overstable to axisymmetric perturbation under a variety of conditions. Furthermore, numerical simulations confirm that the radial oscillations induce quasi-periodic modulations of the disk luminosity. The disk oscillation model may be responsible for quasi-periodic oscillations (QPOs) observed in low mass X-ray binaries (LMXBs), cataclysmic variables (CVs), and other compact objects.

Type
III. Models
Information
International Astronomical Union Colloquium , Volume 134: Nonlinear Phenomena in Stellar Variability , 1993 , pp. 361 - 364
Copyright
Copyright © Kluwer 1993

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