Рубрики:
PLASMA DEPLETION LAYER
EARTHS BOW SHOCK
PRESSURE ANISOTROPY
MIRROR INSTABILITY
MAGNETIZED PLASMA
JUMP CONDITIONS
MAGNETOSHEATH
WAVES
DISCONTINUITIES
MECHANISM
Кл.слова (ненормированные):
anisotropic fast shocks
PLASMA DEPLETION LAYER
EARTHS BOW SHOCK
PRESSURE ANISOTROPY
MIRROR INSTABILITY
MAGNETIZED PLASMA
JUMP CONDITIONS
MAGNETOSHEATH
WAVES
DISCONTINUITIES
MECHANISM
Кл.слова (ненормированные):
anisotropic fast shocks
Аннотация: In this paper, we concentrate on the analysis of the anisotropic Rankine-Hugoniot equations for perpendicular and oblique fast shocks. In particular, as additional information to the anisotropic set of equations, the threshold conditions of the fire-hose and mirror instability are used to bound the range of the pressure anisotropy downstream of the discontinuity. These anisotropic threshold conditions of the plasma instabilities are obtained via a kinetic approach using a generalized Lorentzian distribution function, the so-called kappa distribution function. Depending on up-stream conditions, these instabilities further define stable and unstable regions with regard to the pressure anisotropy downstream of the shock. The calculations are done for different upstream Alfven Mach numbers. We found that low values of the parameter kappa reduce the pressure anisotropy downstream of the shock. (C) 2003 Elsevier Ltd. All rights reserved.
Доп.точки доступа:
Vogl, D.F.; Langmayr, D.; Erkaev, N.V.; Еркаев, Николай Васильевич; Biernat, H.K.; Farrugia, C.J.; Muhlbachler, S.