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Nonextensive Statistical Mechanics in Astrophysics

A special issue of Entropy (ISSN 1099-4300). This special issue belongs to the section "Astrophysics, Cosmology, and Black Holes".

Deadline for manuscript submissions: 15 April 2026 | Viewed by 745

Special Issue Editor


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Guest Editor
School of Science, Tianjin University, Tianjin 300072, China
Interests: nonequilibrium statistical physics; nonextensive statistical mechanics; astrophysical and space plasmas; theoretical astrophysics

Special Issue Information

Dear Colleagues,

Nonextensive statistical mechanics is a non-traditional statistical theory that is based on Tsallis’ nonextensive entropy and has power-law distribution functions, suitable for describing nonequilibrium complex systems with long-range interactions. It has been widely and successfully applied to study complex systems in various natural science research fields, such as physics, chemistry, astronomy, astrophysics, life sciences etc. In the fields of astronomy and astrophysics, the theory of nonextensive statistical mechanics has been successfully applied to the study of self-gravitating systems, Jeans criteria, stellar polytopes, systems with kappa distributions, plasma astrophysics, dark matter, galaxies, galaxy clusters, and so on.

This Special Issue aims to further enhance and expand the research applications of nonextensive statistical mechanics in astrophysics, exploring the understanding and analysis of astronomical and astrophysical phenomena in astrophysical complex systems with non-Maxwell velocity distributions. The scope of this Special Issue includes but is not limited to papers on astrophysical and space plasmas, planetary physics, transport phenomena in astrophysics, self-gravity systems, solar and stellar physics, galaxy dynamics, gravitational waves, dark matter, dark energy, and cosmology.

Prof. Dr. Jiulin Du
Guest Editor

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Keywords

  • plasma astrophysics with non-Maxwell distributions
  • astrophysical plasma and space plasma
  • planetary plasmas
  • transport theory in astrophysics
  • gravitational waves
  • self-gravitating systems
  • solar and stellar physics
  • galactic dynamics
  • dark matter
  • dark energy
  • cosmology

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Published Papers (1 paper)

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Research

10 pages, 279 KB  
Article
On the Stochastic Dynamics for the Regularized Kappa-Distributed Plasmas
by Ran Guo
Entropy 2025, 27(11), 1138; https://doi.org/10.3390/e27111138 - 5 Nov 2025
Viewed by 408
Abstract
The generalized fluctuation–dissipation relations that produce the regularized Kappa distributions are studied. The two-variable Fokker–Planck equation, as well as its reductions in the absence of potential and in the overdamped limit, are considered. All these Fokker–Planck equations have the regularized Kappa distributions as [...] Read more.
The generalized fluctuation–dissipation relations that produce the regularized Kappa distributions are studied. The two-variable Fokker–Planck equation, as well as its reductions in the absence of potential and in the overdamped limit, are considered. All these Fokker–Planck equations have the regularized Kappa distributions as the stationary solutions if the friction and diffusion coefficients satisfy the generalized fluctuation–dissipation relations. In addition, we prove that the principle of detailed balance holds for all the stationary solutions derived in this work. Full article
(This article belongs to the Special Issue Nonextensive Statistical Mechanics in Astrophysics)
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