Gravothermal Catastrophe and Negative Specific Heat of Self-Gravitating Systems
スポンサーリンク
概要
- 論文の詳細を見る
Thermodynamics of self-gravitating gas systems, which is enclosed by an adiabatic spherical wall, is discussed. When the temperature distribution is isothermal, the system is in thermodynamic equilibrium in the sense that the first order variation of the total entropy of the system vanishes. However, the second order variation of the total entropy may be positive, when the effect of gravity exceeds a certain limit. Then, the system may evolve to make its entropy increase. This is the gravothermal catastrophe, which was pointed out first by Antonov in 1962, but for which some questions were raised concerning its reality. In the present paper, this catastrophe is analysed by extending functional space of variation to include non-isothermal perturbations. Its results in two merits : It is most convenient to make a close relation with usual concepts in the thermodynamics of irreversible process, and the preset formulation does not contain any singular quantities which brought a confusion in the interpretation of the real physical processes.
- 理論物理学刊行会の論文
- 1978-07-25
著者
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HACHISU Izumi
Department of General Systems Studies, Graduate School of Arts and Sciences, The University of Tokyo
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Hachisu Izumi
Department Of Aeronautical Engineering Kyoto University
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Hachisu Izumi
Department Of Earth Science And Astronomy College Of General Education University Of Tokyo
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SUGIMOTO Daiichiro
Department of Earth Science and Astronomy College of General Education, University of Tokyo
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Sugimoto Daiichiro
Department Of Earth Science And Astronomy University Of Tokyo
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Sugimoto Daiichiro
Department Of Earth Science And Astronomy College Of General Education University Of Tokyo
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HACHISU Izumi
Department of Eaarth Sience and Astronomy College of General Education, University of Tokyo
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HACHISU Izumi
Department of Earth Science and Astronomy College of General Education, University of Tokyo
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Sugimoto Daiichiro
Department of General Systems Studies, College of Arts and Sciences, The University of Tokyo
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