138 citations · 1.5k across the 46 of their papers we have counts for
20 papers · 1 filter
Anisotropic electron heating in turbulence-driven magnetic reconnection in the near-Sun solar wind
Luca Franci, Emanuele Papini, Alfredo Micera +5
We perform a high-resolution two-dimensional fully-kinetic numerical simulation of a turbulent plasma system with observation-driven conditions, in order to investigate the interpl…
Spectrum of kinetic plasma turbulence at 0.3-0.9 astronomical units from the Sun
Olga Alexandrova, Vamsee Krishna Jagarlamudi, Petr Hellinger +3
We investigate spectral properties of turbulence in the solar wind that is a weakly collisional astrophysical plasma, accessible to in-situ observations. Using the Helios search co…
Magnetic field turbulence in the solar wind at sub-ion scales: in situ observations and numerical simulations
L. Matteini, L. Franci, O. Alexandrova +5
We investigate the transition of the solar wind turbulent cascade from MHD to sub-ion range by means of a detail comparison between in situ observations and hybrid numerical simula…
Kinetic turbulence in space plasmas observed in the near-Earth and near-Sun solar wind
Olga Alexandrova, Vamsee Krishna Jagarlamudi, Claudia Rossi +4
Turbulence develops in any stressed flow when the scales of the forcing are much larger than those of the dissipation. In neutral fluids, it consists of chaotic motions in physical…
Turbulence vs. fire hose instabilities: 3-D hybrid expanding box simulations
P. Hellinger, L. Matteini, S. Landi +3
The relationship between a decaying plasma turbulence and proton fire hose instabilities in a slowly expanding plasma is investigated using three-dimensional (3-D) hybrid expanding…
In-situ observation of Hall Magnetohydrodynamic Cascade in Space Plasma
Riddhi Bandyopadhyay, Luca Sorriso-Valvo, Alexandros Chasapis +13
We present estimates of the turbulent energy cascade rate, derived from a Hall-MHD third-order law. We compute the contribution from the Hall term and the MHD term to the energy fl…
Von Karman-Howarth equation for Hall magnetohydrodynamics: Hybrid simulations
Petr Hellinger, Andrea Verdini, Simone Landi +2
A dynamical vectorial equation for homogeneous incompressible Hall-MHD turbulence together with the exact scaling law for third-order correlation tensors, analogous to that for the…
Density Fluctuations in the Solar Wind Driven by Alfvén Wave Parametric Decay
Trevor A. Bowen, Samuel Badman, Petr Hellinger +1
Measurements and simulations of inertial compressive turbulence in the solar wind are characterized by anti-correlated magnetic fluctuations parallel to the mean field and density…
The parametric instability of Alfvén waves: effects of temperature anisotropy
Anna Tenerani, Marco Velli, Petr Hellinger
We study the stability of large amplitude, circularly polarized Alfvén waves in an anisotropic plasma described by the double-adiabatic/CGL closure, and in particular the effect of…
Solar wind turbulent cascade from MHD to sub-ion scales: large-size 3D hybrid particle-in-cell simulations
Luca Franci, Simone Landi, Andrea Verdini +2
Spectral properties of the turbulent cascade from fluid to kinetic scales in collisionless plasmas are investigated by means of large-size three-dimensional (3D) hybrid (fluid elec…
Magnetic reconnection as a driver for a sub-ion scale cascade in plasma turbulence
L. Franci, S. S. Cerri, F. Califano +6
A new path for the generation of a sub-ion scale cascade in collisionless plasma turbulence, triggered by magnetic reconnection, is uncovered by means of high-resolution two-dimens…
Mirror instability in the turbulent solar wind
P. Hellinger, S. Landi, L. Matteini +2
The relationship between a decaying strong turbulence and the mirror instability in a slowly expanding plasma is investigated using two-dimensional hybrid expanding box simulations…
Proton fire hose instabilities in the expanding solar wind
Petr Hellinger
Using two-dimensional hybrid expanding box simulations we study the competition between the continuously driven parallel proton temperature anisotropy and fire hose instabilities i…
Plasma beta dependence of the ion-scale spectral break of solar wind turbulence: high-resolution 2D hybrid simulations
Luca Franci, Simone Landi, Lorenzo Matteini +2
We investigate properties of the ion-scale spectral break of solar wind turbulence by means of two-dimensional high-resolution hybrid particle-in-cell simulations. We impose an ini…
Ion collisional transport coefficients in the solar wind at 1 AU
Petr Hellinger
Proton and alpha particle collisional transport coefficients (isotropization, relative deceleration frequencies and heating rates) at 1 AU are quantified using the WIND/SWE data. I…
Two-dimensional Hybrid Simulations of Kinetic Plasma Turbulence: Current and Vorticity vs Proton Temperature
Luca Franci, Petr Hellinger, Lorenzo Matteini +2
Proton temperature anisotropies between the directions parallel and perpendicular to the mean magnetic field are usually observed in the solar wind plasma. Here, we employ a high-r…
Microstructure in two- and three-dimensional hybrid simulations of perpendicular collisionless shocks
David Burgess, Petr Hellinger, Peter W. Gingell +1
Supercritical collisionless perpendicular shocks have an average macrostructure determined primarily by the dynamics of ions specularly reflected at the magnetic ramp. Within the o…
Plasma turbulence and kinetic instabilities at ion scales in the expanding solar wind
Petr Hellinger, Lorenzo Matteini, Simone Landi +3
The relationship between a decaying strong turbulence and kinetic instabilities in a slowly expanding plasma is investigated using two-dimensional (2-D) hybrid expanding box simula…
Solar wind protons at 1 AU: trends and bounds, constraints and correlations
Petr Hellinger, Pavel M. Travnicek
The proton temperature anisotropy in the solar wind exhibits apparent bounds which are compatible with the theoretical constraints imposed by temperature-anisotropy driven kinetic…
Nonlinear evolution of the magnetized Kelvin-Helmholtz instability: from fluid to kinetic modeling
P. Henri, S. S. Cerri, F. Califano +11
The nonlinear evolution of collisionless plasmas is typically a multi-scale process where the energy is injected at large, fluid scales and dissipated at small, kinetic scales. Acc…