Nonlinear Langmuir structures: Soliton and shock in a rotating weakly relativistic electron-positron magnetoplasma with stationary positive ions

Details Nonlinear Langmuir structures: Soliton and shock in a rotating weakly relativistic electron-positron magnetoplasma with stationary positive ions Nonlinear Langmuir structures: Soliton and shock in a rotating weakly relativistic electron-positron magnetoplasma with stationary positive ions

Jun 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010phpl...17f2304e&link_type=abstract

Physics of Plasmas, Volume 17, Issue 6, pp. 062304-062304-8 (2010).

Physics

2

Perturbation Theory, Plasma Magnetohydrodynamics, Plasma Shock Waves, Plasma Solitons, Poisson Equation, Relativistic Plasmas, Solitons, Bgk Modes, Shock Waves And Discontinuities, Magnetohydrodynamics, Relativistic Plasmas

Scientific paper

Theoretical and numerical studies are performed for nonlinear Langmuir structures (soliton and shock) in a rotating weakly relativistic electron-positron magnetoplasma with background stationary positive ions. For this purpose, the reductive perturbation technique is employed to the weakly relativistic hydrodynamical electrons/positrons fluid equations and Poisson equation, obtaining extended Zakharov-Kuznetsov equation. The latter has been solved analytically. The features of the nonlinear excitations and their propagation conditions are investigated numerically. Our finding could elucidate the nonlinear electrostatic structures that propagate in astrophysical plasma situations where rotating, magnetized plasma can exist; such as polar cups region of pulsars, around active galactic nuclei, neutron stars, and white dwarfs.

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