Pulsational instability of accretion disks around compact objects |
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| Authors: | T Okuda S Mineshige |
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| Institution: | (1) Hakodate College, Hokkaido Univ. of Education, 040 Hakodate, Japan;(2) Department of Physics, Ibaraki Univ., 310 Mito, Japan |
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| Abstract: | 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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