Coexistence of self-similar and anomalous scalings in turbulent small-scale solar magnetic fields

2023/07/10 by Gorobets Andrei Y., Y., Gorobets Andrei, Berdyugina Svetlana V +1
Earth and Planetary Sciences · Economics, Econometrics and Finance · Physics and Astronomy · #Complex Systems and Time Series Analysis #Earthquake Detection and Analysis #FOS: Physical sciences #Fluid Dynamics (physics.flu-dyn) #Plasma Physics (physics.plasm-ph) #Solar and Space Plasma Dynamics #Solar and Stellar Astrophysics (astro-ph.SR)

paper · pdf · doi:10.48550/arxiv.2307.04703

openalex publication_date 2023/07/10 · openalex created_date 2023/07/12 · openalex updated_date 2026/07/28

Abstract

We report an evidence that self-similar and anomalous scalings coexist in a turbulent medium, particularly in fluctuations of the magnetic field flux density in magnetized plasma of the solar photosphere. The structure function scaling exponents in the inertial range have been analyzed for fluctuations grouped according to the sign of the path-dependent stochastic entropy production. It is found that the scaling exponents for fluctuations with the positive entropy production follow the phenological linear dependence for the magnetohydrodynamic turbulence. For fluctuations with the negative entropy production, the scaling is anomalous.

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