Journal
CENTRAL EUROPEAN JOURNAL OF PHYSICS
Volume 3, Issue 3, Pages 376-381Publisher
DE GRUYTER POLAND SP Z O O
DOI: 10.2478/BF02475644
Keywords
nonextensive statistical mechanics; self-gravitating system; hydrostatic equilibrium
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Self-gravitating systems are generally thought to behavior non-extensively due to the long-range nature of gravitational forces. We discuss a relation between the nonextensive parameter q of Tsallis statistics, the temperature gradient and the gravitational potential based on the equation of hydrostatic equilibrium for self-gravitating systems. It is suggested that the nonextensive parameter in Tsallis statistics has a clear physical meaning with regard to the non-isothermal nature of the systems with long-range interactions. Tsallis' equilibrium distribution for the self-gravitating systems describes the property of hydrostatic equilibrium of the systems. (C) Central European Science Journals. All rights reserved.
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