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Multispacecraft Measurement of Anisotropic Correlation Functions in Solar Wind Turbulence

Horbury, T. S.; Osman, K. T.

Multispacecraft measurements in the solar wind are used to determine the field-aligned anisotropy of magnetohydrodynamic inertial range turbulence. The ratio of the parallel to perpendicular correlation lengths is measured by using time-lagged two-point correlations to construct a spatial autocorrelation function. The mean ratio obtained, 1.79+/-0…