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Time-Fractional KdV Equation for the plasma in auroral zone using Variational Methods

2010/02/07 by El-Said A. El-Wakil, Essam M. Abulwafa, El-Wakil, El-Said A. +6
Mathematics · Physics and Astronomy · #Adaptation and Self-Organizing Systems (nlin.AO) #Dust and Plasma Wave Phenomena #FOS: Physical sciences #Fractional Differential Equations Solutions #Mathematical Physics (math-ph) #Nonlinear Waves and Solitons #Pattern Formation and Solitons (nlin.PS) #Plasma Physics (physics.plasm-ph) #math-ph #math.MP #nlin.AO #nlin.PS #physics.plasm-ph

paper · pdf · doi:10.48550/arxiv.1002.1501

1 tex file + 5 eps figures

arxiv created 2010/02/07 · openalex publication_date 2010/02/07 · arxiv updated 2010/06/29 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

The reductive perturbation method has been employed to derive the Korteweg-de Vries (KdV) equation for small but finite amplitude electrostatic waves. The Lagrangian of the time fractional KdV equation is used in similar form to the Lagrangian of the regular KdV equation. The variation of the functional of this Lagrangian leads to the Euler-Lagrange equation that leads to the time fractional KdV equation. The Riemann-Liouvulle definition of the fractional derivative is used to describe the time fractional operator in the fractional KdV equation. The variational-iteration method given by He is used to solve the derived time fractional KdV equation. The calculations of the solution with initial condition A0*sech(cx)2 are carried out. Numerical studies have been made using plasma parameters close to those values corresponding to the dayside auroral zone. The effects of the time fractional parameter on the electrostatic solitary structures are presented.

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