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Diagnosing collisionless energy transfer using field-particle correlations: gyrokinetic turbulence

Klein, Kristopher G.; Howes, Gregory G.; Tenbarge, Jason M.

Determining the physical mechanisms that extract energy from turbulent fluctuations in weakly collisional magnetized plasmas is necessary for a more complete characterization of the behaviour of a variety of space and astrophysical plasmas. Such a determination is complicated by the complex nature of the turbulence as well as observational constra…

Magnetized Kelvin-Helmholtz instability: theory and simulations in the Earth's magnetosphere context

Califano, Francesco; Faganello, Matteo

The Kelvin-Helmholtz instability, proposed a long time ago for its role in and impact on the transport properties at magnetospheric flanks, has been widely investigated in the Earth's magnetosphere context. This review covers more than fifty years of theoretical and numerical efforts in investigating the evolution of Kelvin-Helmholtz vortices and …

The development of magnetic field line wander by plasma turbulence

Howes, Gregory G.; Bourouaine, Sofiane

Plasma turbulence occurs ubiquitously in space and astrophysical plasmas, mediating the nonlinear transfer of energy from large-scale electromagnetic fields and plasma flows to small scales at which the energy may be ultimately converted to plasma heat. But plasma turbulence also generically leads to a tangling of the magnetic field that threads t…

The development of magnetic field line wander in gyrokinetic plasma turbulence: dependence on amplitude of turbulence

Howes, Gregory G.; Bourouaine, Sofiane

The dynamics of a turbulent plasma not only manifests the transport of energy from large to small scales, but also can lead to a tangling of the magnetic field that threads through the plasma. The resulting magnetic field line wander can have a large impact on a number of other important processes, such as the propagation of energetic particles th…