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

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

2006-07-13

arxiv.org/abs/physics/0607128v1

Physics

Space Physics

7 pages, 2 figures, in press on Europhys. Lett

Scientific paper

10.1209/epl/i2006-10172-y

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.

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