Local Axisymmetric Instability Criterion in the Thin, Rotating, Multicomponent Disk
作者： R. R. Rafikov
DOI: 10.1046/J.1365-8711.2001.04201.X
关键词: Dispersion relation 、 Instability 、 Disc 、 Rotational symmetry 、 Mechanics 、 Component (thermodynamics) 、 Limit (mathematics) 、 Kinematics 、 Physics 、 Astrophysics 、 Stability (probability)
摘要: Purely gravitational perturbations are considered in a thin rotating disk composed of several gas and stellar components. The dispersion relation for the axisymmetric density waves propagating through is found criterion local stability whole system formulated. In appropriate limit two-component we confirm findings Jog & Solomon (1984) extend consideration to case when one component collisionless. Gravitational Galactic Solar neighborhood based on multicomponent instability condition explored using recent measurements composition kinematics obtained by Hipparcos satellite.
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