Small-scale Induced Large-scale Transitions in Solar Wind Magnetic Field

Alberti, Tommaso; Faranda, Davide; Donner, Reik V.; Caby, Theophile; Carbone, Vincenzo; Consolini, Giuseppe; Dubrulle, Berengere; Vaienti, Sandro

doi:10.3847/2041-8213/ac0148

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Small-scale Induced Large-scale Transitions in Solar Wind Magnetic Field

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Alberti, Tommaso
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Faranda, Davide
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Donner, Reik V.
Potsdam Institute for Climate Impact Research;

Caby, Theophile
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Carbone, Vincenzo
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Consolini, Giuseppe
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Dubrulle, Berengere
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Vaienti, Sandro
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Citation

Alberti, T., Faranda, D., Donner, R. V., Caby, T., Carbone, V., Consolini, G., Dubrulle, B., Vaienti, S. (2021): Small-scale Induced Large-scale Transitions in Solar Wind Magnetic Field. - The Astrophysical Journal Letters, 914, 1, L6.
https://doi.org/10.3847/2041-8213/ac0148

Cite as: https://publications.pik-potsdam.de/pubman/item/item_26603

Abstract

We investigate the role of small-scale dynamics in inducing large-scale transitions in the solar wind magnetic field by means of dynamical system metrics based on instantaneous fractal dimensions. By looking at the corresponding multiscale features, we observe a break in the average attractor dimension occurring at the crossover between the inertial and the kinetic/dissipative regime. Our analysis suggests that large-scale transitions are induced by small-scale dynamics through an inverse cascade mechanism driven by local correlations, while electron contributions (if any) are hidden by instrumental noise.