The transport of low frequency turbulence throughout the heliosphere

Details The transport of low frequency turbulence throughout the heliosphere The transport of low frequency turbulence throughout the heliosphere

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1302..167z&link_type=abstract

PICKUP IONS THROUGHOUT THE HELIOSPHERE AND BEYOND: Proceedings of the 9th Annual International Astrophysics Conference. AIP Con

Astronomy and Astrophysics

Astrophysics

2

Magnetohydrodynamics, Solar Wind, Spacecraft, Turbulent Flow, Magnetohydrodynamics And Plasmas, Particle Emission, Solar Wind, Spacecraft/Atmosphere Interactions, Turbulence

Scientific paper

Numerous problems in space physics and astrophysics require a detailed understanding of the transport and dissipation of low frequency turbulence in an expanding magnetized flow. We employ a scale-separated decomposition of the incompressible MHD equations and develop a moment hierarchy to describe the transport of the total energy density in fluctuations, the cross-helicity, the energy difference, and the correlation lengths corresponding to forward and backward propagating modes. Our primary closure assumption is that of structural similarity of the fluctuations. This yields a nonlinear coupled system of 5 equations that describe the transport of turbulence in sub-Alfvénic and super-Alfvénic flows.

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