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Large amplitude electromagnetic solitons in a fully relativistic magnetized electron-positron-pair plasma

Abstract : Nonlinear propagation of purely stationary large amplitude electromagnetic (EM) solitary waves in a magnetized electron-positron (EP) plasma is studied using a fully relativistic two-fluid hydrodynamic model which accounts for physical regimes of both weakly relativistic $(P\ll nmc^2)$ and ultrarelativistic $(P\gg nmc^2)$ random thermal energies. Here, $P$ is the thermal pressure, $n$ the number density and $m$ the mass of a particle, and $c$ is the speed of light in vacuum. Previous theory in the literature [Phys. Plasmas \textbf{11}, 3078 (2004)] is advanced and generalized by the relativistic thermal motion of both electrons and positrons. While both the sub-Alfv{\'e}nic and super-Alfv{\'e}nic solitons coexist in the weakly relativistic regime, the ultrarelativistic EP plasmas in contrast support only the sub-Alfv{\'e}nic solitons. Different limits of the Mach numbers and soliton amplitudes are also examined in these two physical regimes.
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Preprints, Working Papers, ...
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https://hal.archives-ouvertes.fr/hal-02611821
Contributor : Sayantan Dutta <>
Submitted on : Monday, May 18, 2020 - 5:32:57 PM
Last modification on : Tuesday, June 16, 2020 - 3:25:55 AM

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  • HAL Id : hal-02611821, version 1
  • ARXIV : 2005.06288

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Gadadhar Banerjee, Sayantan Dutta, A. P. Misra. Large amplitude electromagnetic solitons in a fully relativistic magnetized electron-positron-pair plasma. 2020. ⟨hal-02611821⟩

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