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arXiv · astro-ph/0404190

Global axisymmetric stability analysis for a composite system of two gravitationally coupled scale-free discs

Yue Shen·Yu-Qing Lou
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Abstract

In a composite system of gravitationally coupled stellar and gaseous discs, we perform linear stability analysis for axisymmetric coplanar perturbations using the two-fluid formalism. The background stellar and gaseous discs are taken to be scale-free with all physical variables varying as powers of cylindrical radius $r$ with compatible exponents. The unstable modes set in as neutral modes or stationary perturbation configurations with angular frequency $ω=0$.

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Yue Shen, Yu-Qing Lou. 2004-06-16. Global axisymmetric stability analysis for a composite system of two gravitationally coupled scale-free discs. https://doi.org/10.1088/1009-9271%2F4%2F6%2F541

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