Results 11 to 20 of about 29,707 (250)
On Extended d-D Kappa Distribution
AxiomsThe thermal Doppler broadening of spectral profiles for particle populations in the absence or presence of potential fields can be described by kappa distributions.
Arak M. Mathai, Hans J. Haubold
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Plasma, 2023 In the present work, the kinetic exospheric model of the solar wind is improved by considering regularized Kappa distributions that have no diverging moments through consideration of a cut-off at relativistic velocities.
V Pierrard +2 more
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Exploring Numerical Correlations: Models and Thermodynamic Kappa. [PDF]
Entropy (Basel)McComas et al. (2025) introduced a numerical experiment, where ordinary uncorrelated collisions between collision pairs are followed by other, controlled (correlated) collisions, shedding light on the emergence of kappa distributions through particle ...
Sarlis NV, McComas DJ, Livadiotis G.
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Characterizing cometary electrons with kappa distributions [PDF]
Journal of Geophysical Research: Space Physics, 2016 AbstractThe Rosetta spacecraft has escorted comet 67P/Churyumov‐Gerasimenko since 6 August 2014 and has offered an unprecedented opportunity to study plasma physics in the coma. We have used this opportunity to make the first characterization of cometary electrons with kappa distributions.
G Livadiotis, J L Burch, K Chae
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Sheath Formation in a Plasma with Regularized Kappa Distribution. [PDF]
Entropy (Basel)Debye shielding in an electron–ion plasma with regularized kappa distribution is examined. An unmagnetized collisionless plasma sheath with regularized kappa distributed electrons is investigated and the modified Bohm criterion is derived. It is found that the variation of the electrostatic potential depends significantly on the superthermal index κ ...
Huo R.
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Implications of Kappa Suprathermal Halo of the Solar Wind Electrons
Frontiers in Astronomy and Space Sciences, 2022 The electron velocity distributions measured in-situ in space plasmas reveal two central populations, a low-energy and highly dense (quasi-)thermal core, and a more diffuse but hotter suprathermal halo. Even if the core contributes much more to the total
Viviane Pierrard +5 more
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Relativistic regularized kappa distributions [PDF]
Physics of Plasmas, 2022 The special relativistic generalization of isotropic regularized kappa distributions is derived and compared to that of the original Olbertian (or standard) kappa distributions. It is demonstrated that for the latter, the kappa parameter is even more strongly limited than in the non-relativistic case, while for the former, all positive kappa values ...
Linh Han Thanh +2 more
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Physical Correlations Lead to Kappa Distributions
The Astrophysical Journal, 2022 Abstract The recently developed concept of “entropic defect” is important for understanding the foundations of thermodynamics in space plasma physics, and more generally for systems with physical correlations among their particles. Using this concept, this paper derives the basic formulation of the distribution function of velocities (or
G. Livadiotis, D. J. McComas
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Thermodynamic Definitions of Temperature and Kappa and Introduction of the Entropy Defect
Entropy, 2021 This paper develops explicit and consistent definitions of the independent thermodynamic properties of temperature and the kappa index within the framework of nonextensive statistical mechanics and shows their connection with the formalism of kappa ...
George Livadiotis, David J. McComas
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Applied Sciences, 2022 Multicomponent plasmas are ubiquitous in astrophysics and space plasma environments. In the present manuscript, we assumed a dusty plasma system consisting of negative and positive dust species and kappa-distributed electrons and ions.
Abeer A. Mahmoud
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