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Published on: February 13, 2018
Phase-synchronization, energy cascade, and intermittency in solar-wind turbulence
S Perri1, V Carbone, A Vecchio
1Dipartimento di Fisica, Università della Calabria, 87036 Rende, Cosenza, Italy.
Abstract:
The energy cascade in solar wind magnetic turbulence is investigated using MESSENGER data in the inner heliosphere. The decomposition of magnetic field time series in intrinsic functions, each characterized by a typical time scale, reveals phase reorganization. This allows for the identification of structures of all sizes generated by the nonlinear turbulent cascade, covering both the inertial and the dispersive ranges of the turbulent magnetic power spectrum. We find that the correlation (or anticorrelation) of phases occurs between pairs of neighboring time scales, whenever localized peaks of magnetic energy are present at both scales, consistent with the local character of the energy transfer process.
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