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EPL Association, European Physical Society Letters, 5(75), p. 832-838, 2006

DOI: 10.1209/epl/i2006-10172-y

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Persistence of small-scale anisotropy of magnetic turbulence as observed in the solar wind

Journal article published in 2006 by Luca Sorriso-Valvo ORCID, Roberto Bruno, Vincenzo Carbone ORCID, Pierluigi Veltri
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This paper is available in a repository.

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Abstract

The anisotropy of magnetophydrodynamic turbulence is investigated by using solar wind data from the Helios 2 spacecraft. We investigate the behaviour of the complete high-order moment tensors of magnetic field increments and we compare the usual longitudinal structure functions which have both isotropic and anisotropic contributions, to the fully anisotropic contribution. Scaling exponents have been extracted by an interpolation scaling function. Unlike the usual turbulence in fluid flows, small-scale magnetic fluctuations remain anisotropic. We discuss the radial dependence of both anisotropy and intermittency and their relationship. Comment: 7 pages, 2 figures, in press on Europhys. Lett