On the polarization state of hydromagnetic fluctuations in the solar wind

Details On the polarization state of hydromagnetic fluctuations in the solar wind On the polarization state of hydromagnetic fluctuations in the solar wind

Mar 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981jgr....86.1271b&link_type=abstract

Journal of Geophysical Research, vol. 86, Mar. 1, 1981, p. 1271-1278.

Physics

17

Magnetohydrodynamic Turbulence, Polarization Characteristics, Solar Wind, Magnetohydrodynamic Waves, Solar Magnetic Field, Solar Oscillations, Solar Physics, Statistical Distributions, Trailing Edges

Scientific paper

From presently available observations one can infer that the Alfvenic turbulence measured in the solar wind, predominantly on trailing edges of high-speed streams, is a mixture of modes with two different polarizations, namely, Alfvenic modes and modes which are the incompressible limit of slow magnetosonic waves. Using Helios 2 magnetic data and a variance analysis, parallel (to the mean field) and perpendicular components of the fluctuations are separated, and the possible correlation between such components which would be predicted as a consequence of the incompressible character of the turbulence is studied. Correlations between eigenvalues of the variance matrix are also investigated and discussed.

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