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Observation of Inertial Energy Cascade in Interplanetary Space Plasma

Bavassano, B.; Pietropaolo, E.; Bruno, R. +6 more

Direct evidence for the presence of an inertial energy cascade, the most characteristic signature of hydromagnetic turbulence (MHD), is observed in the solar wind by the Ulysses spacecraft. After a brief rederivation of the equivalent of Yaglom’s law for MHD turbulence, a linear relation is indeed observed for the scaling of mixed third-order stru…