Anisotropy in Fast and Slow Solar Wind Fluctuations

Details Anisotropy in Fast and Slow Solar Wind Fluctuations Anisotropy in Fast and Slow Solar Wind Fluctuations

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005apj...635l.181d&link_type=abstract

The Astrophysical Journal, Volume 635, Issue 2, pp. L181-L184.

Astronomy and Astrophysics

Astronomy

68

Magnetohydrodynamics: Mhd, Plasmas, Sun: Solar Wind, Turbulence, Waves

Scientific paper

Using 5 years of spacecraft data from near Earth orbit, we investigate the correlation anisotropy of solar wind magnetohydrodynamic-scale fluctuations and show that the nature of the anisotropy differs in fast (>500 km s-1) and slow (<400 km s-1) streams. In particular, fast streams are relatively more dominated by fluctuations with wavevectors quasi-parallel to the local magnetic field, while slow streams, which appear to be more fully evolved turbulence, are more dominated by quasi-perpendicular fluctuation wavevectors.

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