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Article Dans Une Revue Physics Reports Année : 2023

Scaling Laws for the Energy Transfer in Space Plasma Turbulence

Résumé

One major trait of space plasmas is the multi-scale dynamics resulting from non-linear transfers and conversions of various forms of energy. Routinely evidenced in a range from the large-scale solar structures down to the characteristic scales of ions and electrons, turbulence is a major cross-scale energy transfer mechanism in space plasmas. At intermediate scales, the fate of the energy in the outer space is mainly determined by the interplay of turbulent motions and propagating waves. More mechanisms are advocated to account for the transfer and conversion of energy, including magnetic reconnection, emission of radiation and particle energization, all contributing to make the dynamical state of solar and heliospheric plasmas difficult to predict. The characterization of the energy transfer in space plasmas benefited from numerous robotic missions. However, together with breakthrough technologies, novel theoretical developments and methodologies for the analysis of data played a crucial role in advancing our understanding of how energy is transferred across the scales in the space. In recent decades, several scaling laws were obtained providing effective ways to model the energy flux in turbulent plasmas. Under certain assumptions, these relations enabled to utilize reduced knowledge (in terms of degrees of freedom) of the fields from space
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Dates et versions

hal-04304018 , version 1 (24-11-2023)

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Raffaele Marino, Luca Sorriso-Valvo. Scaling Laws for the Energy Transfer in Space Plasma Turbulence. Physics Reports, 2023, 1006, pp.1-144. ⟨10.1016/j.physrep.2022.12.001⟩. ⟨hal-04304018⟩
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