Observational Tests of Recent MHD Turbulence Perspectives

Details Observational Tests of Recent MHD Turbulence Perspectives Observational Tests of Recent MHD Turbulence Perspectives

Jun 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001stin...0166765g&link_type=abstract

Technical Report, Rept-1042-005#-A2

Computer Science

Magnetohydrodynamic Turbulence, Magnetic Field Configurations, Solar Wind, Time Series Analysis, Ulysses Mission, Pioneer Venus Spacecraft

Scientific paper

This grant seeks to analyze the Heliospheric Missions data to test current theories on the angular dependence (with respect to mean magnetic field direction) of magnetohydrodynamic (MHD) turbulence in the solar wind. Solar wind turbulence may be composed of two or more dynamically independent components. Such components include magnetic pressure-balanced structures, velocity shears, quasi-2D turbulence, and slab (Alfven) waves. We use a method, developed during the first two years of this grant, for extracting the individual reduced spectra of up to three separate turbulence components from a single spacecraft time series. The method has been used on ISEE-3 data, Pioneer Venus Orbiter, Ulysses, and Voyager data samples. The correlation of fluctuations as a function of angle between flow direction and magnetic-field direction is the focus of study during the third year.

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