Perturbation configurations in a two-fluid system of singular isothermal discs
نویسندگان
چکیده
منابع مشابه
Perturbation configurations in a two-fluid system of singular isothermal disks
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. Both SIDs are taken to be razor thin and are in a self-consistent background equilibrium with power-law surface mass densities and flat rotation curves. We obtain stat...
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We construct aligned and unaligned stationary perturbation configurations in a composite system of stellar and coplanarly magnetized gaseous singular isothermal discs (SIDs) coupled by gravity. This study extends recent analyses on (magnetized) SIDs of Shu et al., Lou and Lou & Shen. By this model, we intend to provide a conceptual framework to gain insights for multi-wavelength large-scale str...
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Using the two-fluid formalism with the polytropic approximation, we examine the axisymmetric stability criterion for a composite system of gravitationally coupled stellar and gaseous singular isothermal discs (SIDs). Both SIDs are taken to be infinitely thin and are in a self-consistent steady background rotational equilibrium with power-law surface mass densities (∝ r) and flat rotation curves...
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Axisymmetric stability criteria for a composite system of stellar and magnetized gaseous singular isothermal discs
Using the fluid-magnetofluid formalism, we obtain axisymmetric stability criteria for a composite disc system consisting of stellar and gaseous magnetized singular isothermal discs (MSIDs). Both (M)SIDs are presumed to be razor-thin and are gravitationally coupled in a self-consistent axisymmetric background equilibrium with power-law surface mass densities and flat rotation curves. The gaseous...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2003
ISSN: 0035-8711,1365-2966
DOI: 10.1046/j.1365-8711.2003.06710.x