Excitation of Turbulence in Protoplanetary Disks around Binary Stars


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Accretion disks around young binary stars are subject to strong forces exerted by the system components. Gas–dynamical interactions excite strong non-linear perturbations in the disk, which can give rise to turbulence. This study considers a mechanism for the excitation of turbulence based on the instability of non-linear waves in a rotating flow. It is shown that the spectrum of non-linear perturbations excited in the inner part of the disk leads to turbularization of the flow. Estimates of the Shakura–Syunyaev index, α ∼ 0.01−0.05, are obtained for use in numerical models of accretion disks.

作者简介

E. Kurbatov

Institute of Astronomy

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Email: kurbatov@inasan.ru
俄罗斯联邦, Moscow, 119017

A. Sytov

Institute of Astronomy

Email: kurbatov@inasan.ru
俄罗斯联邦, Moscow, 119017

D. Bisikalo

Institute of Astronomy

Email: kurbatov@inasan.ru
俄罗斯联邦, Moscow, 119017

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