Results 41 to 50 of about 150,813 (163)

Unified description of kappa-type velocity distributions

Physical Review E
6 pages, 1 figure and 5 tables.
J. A. S. Lima, M. H. Benetti
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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.
Broiles, T. W., Livadiotis, G., Burch, J.L., Chae, K., Clark, G., Cravens, T.E., Davidson, R., Eriksson, A., Frahm, R.A., Fuselier, S, Goldstein, J., Goldstein, R., Henri, Pierre, Madanian, H., Mandt, K., Mokashi, P., Pollock, C., Rahmati, A., Samara, M., Schwartz, S. J.   +19 more
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Kappa distributions in the framework of superstatistics

Physica A: Statistical Mechanics and its Applications
The kappa distribution of velocities appears routinely in the study of collisionless plasmas present in Earth's magnetosphere, the solar wind among other contexts where particles are unable to reach thermal equilibrium. Originally justified through the use of Tsallis' non-extensive statistics, nowadays there are alternative frameworks that provide ...
Sergio Davis, Biswajit Bora, Cristian Pavez, Leopoldo Soto   +3 more
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Three-Parameter Kappa Distribution and its Fitting to the Whole Monthly Rainfall Data of Abali Station in Tehran Province

پژوهش‌های ریاضی, 2020
Introduction The kappa distribution was first introduced by Mielke (1973) and Mielke and Johnson (1973) for describing and analyzing precipitation data. This distribution is positively skewed and is widely applied when studying precipitation, wind speed ...
Maryam Sharafi, Farideh Tavangar, Shohre Enami,   +3 more
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Magnetic Spectra Comparison for Kappa-distributed Whistler Electron Fluctuations

The Astrophysical Journal
In the inner heliosphere, space measurements have revealed that plasma is well described by the kappa distributions, which are characterized by the value of the κ parameter.
Daniel H. P., Pablo S. Moya, Bea Zenteno-Quinteros, Rodrigo A. López   +3 more
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Functional background of the Tsallis entropy: 'coarse-grained' systems and 'kappa' distribution functions [PDF]

Nonlinear Processes in Geophysics, 2000
The concept of the generalized entropy is analyzed, with the particular attention to the definition postulated by Tsallis [J. Stat. Phys. 52, 479 (1988)].
A. V. Milovanov, L. M. Zelenyi
doaj  

Analytical Expression of the Beam-Plasma Particles Distribution Function Effect on the Electromagnetic Instability Growth Rate in Strongly Coupled Plasmas [PDF]

Iranian Journal of Astronomy and Astrophysics
The beam-plasma particles distribution function is one of the parameters which plays an important role in the energy-traveling mechanism of the relativistic electrons generated by the laser-plasma interaction in the Inertial Confinement Fusion Plasma ...
Fatemeh Nejadtaghi, Mohammad Mahdavi, Saeid Hassan pour, Hengameh Khanzadeh, Ali Tavassoli   +4 more
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Characteristics of dust acoustic solitary waves through the implementation of kappa-distributed non-thermal electrons and Boltzmann ions

AIP Advances
This study examines Dust Acoustic Solitary Waves (DASWs) within dusty plasmas, investigating the influence of kappa-distributed non-thermal electrons and Boltzmann ions on wave behavior.
A. A. Abid, K. Qamar, N. Ahmad, M. S. Hussain, M. N. S. Qureshi, A. Waheed, B. M. Alotaibi, Shahid Mehmood, Xiaojie Li, Guang-Rui Yao, Yan-Fang Ji   +10 more
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Correlations and Kappa Distributions: Numerical Experiment and Physical Understanding

Entropy
Kappa distributions, their statistical framework, and their thermodynamic origin describe systems with correlations among their particle energies, residing in stationary states out of classical thermal equilibrium/space plasmas, from solar wind to the ...
David J. McComas, George Livadiotis, Nicholas V. Sarlis   +2 more
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Electron Kappa Distributions in Astrophysical Nebulae

, 2017
Until recently, it had been assumed that the electrons in astrophysical nebulae (HII regions and planetary nebulae) are in thermal equilibrium, with energies described by the Maxwell–Boltzmann distribution. This may not always be true. Based on satellite and space probe measurements of electron energies in the solar system, where nonequilibrium energy ...
Nicholls, David, Dopita, Michael, Sutherland, Ralph, Kewley, Lisa   +3 more
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