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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…