On a Non-Local Stability of Self-Gravitating Stellar Systems

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概要

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• Antonov's theory on a stability of collisionless self-gravitating systems is extended so as to include a differential rotation. For slowly rotating systems, the perturbation method is developed on the basis of a linearized Vlasov and Poisson equations with axi-symmetry. By means of this method, a marginal stability is analyzed for a series of Miyamoto's stellar disk models. It is shown that among these stellar disks a class is unstable for a velocity deviation due to the differential rotation. A brief discussion how the method may be applied to a stability analysis of spherical systems is also given.

• 1981-04-25

著者

• TAJIMA Nobuki

  Research Institute for Theoretical Physics Hiroshima University

• Tajima Nobuki

  Department of Applied Physics, Fukui University

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