Simulation of a Multifractal Turbulent Electromagnetic Field in Cosmic Plasma

N. N. Levashov; Левашов Н. Н.; V. Yu. Popov; Попов В. Ю.; H. V. Malova; Малова Х. В.; L. M. Zelenyi; Зеленый Л. М.

doi:10.31857/S0023420622100089

Simulation of a Multifractal Turbulent Electromagnetic Field in Cosmic Plasma

Authors: Levashov N.N.¹^,2, Popov V.Y.³^,4, Malova H.V.²^,5, Zelenyi L.M.²
Affiliations:
1. Moscow State University, 119991, Moscow, Russia
2. Space Research Institute, Russian Academy of Sciences, 117997, Moscow, Russia
3. Moscow State University, 119991, Moscow, Russia4 Space Research Institute, Russian Academy of Sciences, 117997, Moscow, Russia
4. Higher School of Economics University, 101000, Moscow, Russia
5. Skobeltsyn Institute of Nuclear Physics, Moscow State University, 119991, Moscow, Russia
Issue: Vol 61, No 2 (2023)
Pages: 116-123
Section: Articles
URL: https://journals.rcsi.science/0023-4206/article/view/137328
DOI: https://doi.org/10.31857/S0023420622100089
EDN: https://elibrary.ru/LSFWRA
ID: 137328

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Abstract
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Abstract

A two-dimensional model of a multifractal turbulent electromagnetic field is proposed that allows flexibly varying the width of the multifractal spectrum and the level of intermittency. The electromagnetic field is modeled using a superposition of wavelets that are distributed uniformly throughout the computational domain. By means of a special distribution of amplitudes, we ensure that the resulting field is multifractal and intermittent. This model was used to study the effect of multifractality and intermittency on the acceleration of charged particles in a turbulent field in the Earth’s magnetotail. It was shown that, in the case of a multifractal field, individual particles are able to achieve higher energy values in comparison with monofractal turbulence.

References

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