Results 11 to 20 of about 89,978 (184)

Corrigendum: Olbert’s Kappa Fermi and Bose Distributions [PDF]

open access: yesFrontiers in Physics, 2021
R. A. Treumann   +2 more
doaj   +2 more sources

Relativistic regularized kappa distributions [PDF]

open access: yesPhysics 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
openaire   +2 more sources

Implications of Kappa Suprathermal Halo of the Solar Wind Electrons

open access: yesFrontiers 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
doaj   +1 more source

Physical Correlations Lead to Kappa Distributions

open access: yesThe 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
openaire   +2 more sources

Transport Equation of Kappa Distributions in the Heliosphere

open access: yesThe Astrophysical Journal, 2023
In this paper, we develop the transport equation of kappa, the fundamental thermodynamic parameter that labels kappa distributions of particle velocities.
G. Livadiotis, D. J. McComas
doaj   +1 more source

Thermodynamic Definitions of Temperature and Kappa and Introduction of the Entropy Defect

open access: yesEntropy, 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
doaj   +1 more source

Fully Nonlinear Small Amplitude Dynamical Waves for Multicomponent Complex Plasma with Kappa Distributed Electrons and Ions

open access: yesApplied 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
doaj   +1 more source

Influence of MHD Turbulence on Ion Kappa Distributions in the Earth's Plasma Sheet as a Function of Plasma β Parameter

open access: yesFrontiers in Astronomy and Space Sciences, 2021
The possible influence of MHD turbulence on the energy distributions of ions in the Earth's plasma sheet was studied using data taken by the THEMIS satellites.
A. V. Eyelade   +9 more
doaj   +1 more source

Determining the Bulk Parameters of Plasma Electrons from Pitch-Angle Distribution Measurements

open access: yesEntropy, 2020
Electrostatic analysers measure the flux of plasma particles in velocity space and determine their velocity distribution function. There are occasions when science objectives require high time-resolution measurements, and the instrument operates in short
Georgios Nicolaou   +5 more
doaj   +1 more source

Clades and clans: a comparison study of two evolutionary models [PDF]

open access: yes, 2014
The Yule-Harding-Kingman (YHK) model and the proportional to distinguishable arrangements (PDA) model are two binary tree generating models that are widely used in evolutionary biology.
A McKenzie   +31 more
core   +2 more sources

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