Two physical explanations of the nonextensive parameter in a self-gravitating system

Abstract

We present two possible physical explanations of the nonextensive parameter in a self-gravitating system. One is related to the detailed balance in such system. With the detailed balance, the statistical balance of molecular energy is reached, under which the radiation energy "stored" in the molecules becomes important. Then the relation between the nonextensive parameter and the storage coefficient which measures the ability of molecules to store the radiation energy is constructed. The other explanation is from one dimensionless quantity called (logarithmic) temperature gradient defined in the stellar physics. In view of this, we find that in order to keep the nuclear reactions alive inside the Sun, the ratio of radiation pressure to the total pressure in the core must be more than 0.2833.

10 pages, 2 figures

References in corpus (4)

• Superdiffusion and non-Gaussian statistics in a driven-dissipative 2D dusty plasma
• Constraining nonextensive statistics with plasma oscillation data
• Nonextensive theory of dark matter and gas density profiles
• Cluster temperatures and non-extensive thermo-statistics

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• The anomalous distributions and Soret coefficient in a nonequilibrium colloid system