Observations and numerical simulations of laboratory and space plasmas in almost collisionless regimes reveal anisotropic and non-gyrotropic particle distribution functions. We investigate how such states can persist in the presence of a sheared flow. We focus our attention on the pressure tensor equation in a magnetized plasma and derive analytical self-consistent plasma equilibria which exhibit a novel asymmetry with respect to the magnetic field direction. These results are relevant for investigating, within fluid models that retain the full pressure tensor dynamics, plasma configurations where a background shear flow is present.
CERRI, SILVIO SERGIO (Primo)
CALIFANO, FRANCESCO (Co-primo)
|Autori:||S. S. Cerri;F. Pegoraro;F. Califano;D. Del Sarto;F. Jenko|
|Titolo:||Pressure tensor in the presence of velocity shear: Stationary solutions and self-consistent equilibria|
|Anno del prodotto:||2014|
|Digital Object Identifier (DOI):||10.1063/1.4901570|
|Appare nelle tipologie:||1.1 Articolo in rivista|