Onset of anisotropy and Alfvén waves turbulence in the expanding solar wind

Details Onset of anisotropy and Alfvén waves turbulence in the expanding solar wind Onset of anisotropy and Alfvén waves turbulence in the expanding solar wind

Jul 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aipc..382..306g&link_type=abstract

Proceedings of the eigth international solar wind conference: Solar wind eight. AIP Conference Proceedings, Volume 382, pp. 306

Computer Science

2

Solar Wind Plasma, Sources Of Solar Wind, Plasma Turbulence, Magnetohydrodynamic Waves, Magnetohydrodynamic And Fluid Equation

Scientific paper

The expansion of the solar wind plasma modifies the linear and nonlinear evolution of the fluctuations advected by the solar wind. We use numerical simulations of MHD equations including expansion effects to study the formation of anisotropy in the wind and the interaction of Alfvén waves within a transverse magnetic structures. We find that (1) a large-scale isotropic Alfvénic eddy stretched by expansion naturally leads to streams mixed with smaller scale transverse Alfvén waves with a different anisotropy, (2) the expansion triggers the compressive decay of Alfvénicity in the vicinity of the current sheet but prevents the formation of a well-developed spectrum.

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