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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 (lazarusi@dut.ac.za) School of Physics, University of KwaZulu-Natal, Durban, South Africa
R. BHARUTHRAM
Affiliation:
Faculty of Science, University of Witwatersrand, Johannesburg, South Africa (ramesh.bharuthram@wits.ac.za)
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.

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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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