Langmuir rogue waves in electron-positron plasmas

Journal Article · Tue Mar 15 00:00:00 EDT 2011 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.3559486· OSTI ID:21537277

Moslem, W M ^[1]

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1. Department of Physics, Faculty of Science, Port Said University, Port Said (Egypt) and International Center for Advanced Studies in Physical Sciences, Faculty of Physics and Astronomy, Ruhr University Bochum, D-44780 Bochum (Germany)

Progress in understanding the nonlinear Langmuir rogue waves which accompany collisionless electron-positron (e-p) plasmas is presented. The nonlinearity of the system results from the nonlinear coupling between small, but finite, amplitude Langmuir waves and quasistationary density perturbations in an e-p plasma. The nonlinear Schroedinger equation is derived for the Langmuir waves' electric field envelope, accounting for small, but finite, amplitude quasistationary plasma slow motion describing the Langmuir waves' ponderomotive force. Numerical calculations reveal that the rogue structures strongly depend on the electron/positron density and temperature, as well as the group velocity of the envelope wave. The present study might be helpful to understand the excitation of nonlinear rogue pulses in astrophysical environments, such as in active galactic nuclei, in pulsar magnetospheres, in neutron stars, etc.

• OSTI ID: 21537277
• Journal Information: Physics of Plasmas, Vol. 18, Issue 3; Other Information: DOI: 10.1063/1.3559486; (c) 2011 American Institute of Physics; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COLLISIONLESS PLASMA
COUPLING
DISTURBANCES
ELECTRONS
NONLINEAR PROBLEMS
PLASMA DENSITY
PLASMA WAVES
PONDEROMOTIVE FORCE
POSITRONS
SCHROEDINGER EQUATION
ANTILEPTONS
ANTIMATTER
ANTIPARTICLES
DIFFERENTIAL EQUATIONS
ELEMENTARY PARTICLES
EQUATIONS
FERMIONS
LEPTONS
MATTER
PARTIAL DIFFERENTIAL EQUATIONS
PLASMA
WAVE EQUATIONS