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Perturbation configurations in a two-fluid system of singular isothermal disks

Yu-Qing Lou·Yue Shen
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Abstract

We investigate properties of stationary aligned and unaligned spiral perturbation configurations in a composite system of gravitationally coupled stellar and gaseous singular isothermal disks (SIDs) using the two-fluid formalism. We obtain stationary perturbation solutions for aligned and unaligned spiral logarithmic configurations in such a composite SID system and derive analytically existence criteria for these solutions. In comparison with the similar problem of a single SID studied by Shu et al. (2000), there are now two possible sets of solutions owing to an additional SID.

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Yu-Qing Lou, Yue Shen. 2003-08-05. Perturbation configurations in a two-fluid system of singular isothermal disks. https://doi.org/10.1046/j.1365-8711.2003.06710.x

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