# INSTABILITY OF HIGH-FREQUENCY ACOUSTIC WAVES IN ACCRETION DISKS WITH TURBULENT VISCOSITY

@article{Khoperskov1998INSTABILITYOH, title={INSTABILITY OF HIGH-FREQUENCY ACOUSTIC WAVES IN ACCRETION DISKS WITH TURBULENT VISCOSITY}, author={Alexander V. Khoperskov and Sergey Khrapov}, journal={Astronomy and Astrophysics}, year={1998}, volume={345}, pages={307-314} }

The dynamics of linear perturbations in a differen- tially rotating accretion disk with a non-homogeneous vertical structure is investigated. We find that turbulent viscosity results in instability of both pinching oscillations, and bending modes. Not only the low-frequency fundamental modes, but also the high-frequency reflective harmonics appear to be unstable. The question of the limits of applicability of the thin disk model (MTD) is also investigated. Some differences in the dispersion…

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