The Stability and Vibrations of a Gas of Stars

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Abstract
The initial value problem for a small disturbance from an equilibrium of an encounterless stellar system is discussed. In a spherical cluster small wave-length disturbances damp as the stars become well mixed. In the artificial infinite uniform rotating system we discuss disturbances of all wave-lengths. Jeans' condensational instability is the same as in a collision dominated gas. Landau damping occurs for wave-lengths smaller than the critical one.

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