Abstract.
Anomalous diffusion models of energetic particles in space plasmas are developed by introducing the fractional Parker diffusion-convection equation. Analytical solution of the space-time fractional equation is obtained by use of the Caputo and Riesz-Feller fractional derivatives with the Laplace-Fourier transforms. The solution is given in terms of the Fox H-function. Profiles of particle densities are illustrated for different values of the space fractional order and the so-called skewness parameter.
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Tawfik, A.M., Fichtner, H., Elhanbaly, A. et al. General solution of a fractional Parker diffusion-convection equation describing the superdiffusive transport of energetic particles. Eur. Phys. J. Plus 133, 209 (2018). https://doi.org/10.1140/epjp/i2018-12049-3
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DOI: https://doi.org/10.1140/epjp/i2018-12049-3