Dynamics of nonlinear ion-waves in Fermi-Dirac electron-positron-ion magnetoplasmas

Details Dynamics of nonlinear ion-waves in Fermi-Dirac electron-positron-ion magnetoplasmas Dynamics of nonlinear ion-waves in Fermi-Dirac electron-positron-ion magnetoplasmas

2011-02-11

arxiv.org/abs/1102.2365v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

Accepted: Journal of Astrophysics and Space Science

Scientific paper

Oblique propagation and head-on collisions of solitary structures is studied in a dense magnetized plasma comprised of relativistic ultra-cold electrons and positrons and positive dynamic ions using conventional extended multi-scales technique, in the ground of quantum hydrodynamics model. The variations of head-on collision phase-shift as well as the characteristic soliton amplitude and width is evaluated numerically in terms of other plasma parameters such as mass-density, normalized magnetic field strength, its angle with respect to the soliton propagation and the relative positron number-density. The relevance of current investigations, with appropriate plasma parameters for the astrophysical dense magnetized objects such as white-dwarfs, is addressed.

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