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Modeling Space Plasma Dynamics with Anisotropic Kappa Distributions
Schlickeiser, R.; Pierrard, V.; Lazar, M. +1 more
Space plasmas are collisionpoor and kinetic effects prevail leading to wave fluctuations, which transfer the energy to small scales: wave-particle interactions replace collisions and enhance dispersive effects heating particles and producing suprathermal populations observed at any heliospheric distance in the solar wind. At large distances collis…
Observations of Electromagnetic Fluctuations at Ion Kinetic Scales in the Solar Wind
Podesta, John J.
Wavelet techniques enable reduced power spectra and cross-spectra to be analyzed as a function of the angle θ BV formed by the scale dependent local mean magnetic field B 0 and the flow direction of the solar wind. These techniques allow the data along a line oriented at any angle θ BV to B 0 to be iso…
On the Passive Nature of Proton Temperature in Solar Wind Turbulence
Consolini, Giuseppe
In the framework of space plasma physics the solar wind is commonly recognized as an example of turbulent medium. Although turbulence studies mainly focalize on the features of velocity field (and magnetic field for plasma media), another field of investigation deals with the properties of scalar quantities (such as the concentrations of tracers, …
Superdiffusive Transport at Shocks in Space Plasmas
Zimbardo, Gaetano; Perri, Silvia
Superdiffusion is characterized by a nonlinear growth of the mean square deviation with time. Superdiffusive transport can be interpreted in terms of a Lévy random walk, a stochastic process where a power-law distribution of free path lengths is allowed. Considering particles accelerated at interplanetary shocks, it is found that their intensity p…