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Vortex structures in dense electron–positron–ion plasmas

Q Haque

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A linear dispersion relation for electrostatic quantum drift and acoustic waves has been found for dense electron–positron–ion magnetoplasmas. Both the fermion and thermal temperature effects have been considered for electrons and positrons. In the nonlinear regime, a stationary solution in the form of dipolar vortices has been obtained. For illustration, the results were applied to the astrophysical plasma of the atmosphere of neutron stars/pulsars.


PACS

52.35.We Plasma vorticity

52.27.Aj Single-component, electron-positive-ion plasmas

52.35.Fp Electrostatic waves and oscillations (e.g., ion-acoustic waves)

52.35.Kt Drift waves

52.35.Mw Nonlinear phenomena: waves, wave propagation, and other interactions (including parametric effects, mode coupling, ponderomotive effects, etc.)

95.30.Qd Magnetohydrodynamics and plasmas

Subjects

Plasma physics

Astrophysics and astroparticles

Dates

Issue 5 (November 2009)

Received 30 July 2009, accepted for publication 11 August 2009

Published 5 October 2009



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