Pulsational instability of accretion disks around compact objects

Details Pulsational instability of accretion disks around compact objects Pulsational instability of accretion disks around compact objects

Dec 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993ap%26ss.210..361o&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 210, no. 1-2, p. 361-364

Statistics

Computation

2

Accretion Disks, Stellar Luminosity, Stellar Models, Stellar Oscillations, Cataclysmic Variables, Computational Astrophysics, Computerized Simulation, Periodic Variations, Perturbation Theory, X Ray Binaries

Scientific paper

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.

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