The energy cascade in solar wind MHD turbulence

Abstract:

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. A linear relation is indeed observed for the scaling of mixed third order structure functions involving Elsässer variables. This experimental result, confirming the prescription stemming from a theorem for MHD turbulence, firmly establishes the turbulent character of low-frequency velocity and magnetic field fluctuations in the solar wind plasma. © Springer Science+Business Media B.V. 2008.

Año de publicación:

2009

Keywords:

• solar wind
• magnetohydrodynamics
• Turbulence

Fuente:

scopus