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Modified Korteweg–de Vries–Zakharov–Kuznetsov solitons in symmetric two-temperature electron–positron plasmas

Published online by Cambridge University Press:  01 August 2008

I. J. LAZARUS ,
R. BHARUTHRAM  and
M. A. HELLBERG
I. J. LAZARUS
Affiliation:
Department of Physics, Durban University of Technology, Durban, South Africa ([email protected]) School of Physics, University of KwaZulu-Natal, Durban, South Africa
R. BHARUTHRAM
Affiliation:
Faculty of Science, University of Witwatersrand, Johannesburg, South Africa ([email protected])
M. A. HELLBERG
Affiliation:
School of Physics, University of KwaZulu-Natal, Durban, South Africa
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Abstract

Solitary waves are investigated in a magnetized electron–positron plasma consisting of equal hot and cool components of each species. The hot components have a Boltzmann distribution and the cool components are described by the fluid equations. A modified Korteweg–de Vries–Zakharov–Kuznetsov equation governing the oblique propagation of nonlinear electrostatic modes is derived using the reductive-perturbation technique. Soliton amplitudes are studied as a function of plasma parameters such as the particle number densities and the temperatures. Such results may be of relevance to the magnetosphere of pulsars.

Type
Papers
Information
Journal of Plasma Physics , Volume 74 , Issue 4 , August 2008 , pp. 519 - 529
Copyright
Copyright © Cambridge University Press 2007

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