Analysis of the Relaxation Process Using Nonrelativistic Kinetic Equation(Astrophysics and Cosmology)

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概要

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• We study the linearized kinetic equation of relaxation model proposed by Bhatnagar, Gross and Krook [P.L. Bhatnagar, E.P. Gross and M. Krook, Phys. Rev. 94 (1954), 511] (also called BGK model) and solve the dispersion relation. Using the solution of the dispersion relation, we analyze the relaxation of the macroscopic mode and kinetic mode. Since the BGK model is not based on the expansion in the mean free path in contrast to the Chapman-Enskog expansion, the solution can describe the accurate relaxation of initial disturbance with any wavelength. This nonrelativistic analysis gives suggestions for our next work on the relativistic analysis of relaxation.

• 2010-05-25

著者

• TAKAMOTO Makoto

  Department of Physics, Kyoto University

• INUTSUKA Shu-ichiro

  Department of Physics, Nagoya University

• Takamoto Makoto

  Department Of Molecular Chemistry Osaka University

• Takamoto Makoto

  Department Of Physics Kyoto University

• Inutsuka Shu-ichiro

  Department Of Physics Nagoya University

• INUTSUKA Shu-ichiro

  Department of Physics, Graduate School of Science, Kyoto University

関連論文

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