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| Paper: |
Oscillations of Accretion Disks in Cataclysmic Variable Stars |
| Volume: |
479, Progress in Physics of the Sun and Stars |
| Page: |
343 |
| Authors: |
Osaki, Y. |
| Abstract: |
The disk instability model for the outbursts of dwarf novae is reviewed, with particular attention given to the superoutburst of SU UMa stars. Two intrinsic instabilities in accretion disks of dwarf novae are known; the thermal instability and the tidal instability. The thermal-tidal instability model (abbreviated the TTI model), which combines these two instabilities, was first proposed in 1989 by Osaki (1989) to explain the superoutburst phenomenon of SU UMa stars. Recent Kepler observations of one SU UMa star, V1504 Cyg, have dramatically demonstrated that the superoutburst phenomenon of the SU UMa stars is explained by the thermal-tidal instability model. |
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