Parametric decay of non-linear circularly polarised Alfvén waves

Details Parametric decay of non-linear circularly polarised Alfvén waves Parametric decay of non-linear circularly polarised Alfvén waves

Sep 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aipc..679..359t&link_type=abstract

SOLAR WIND TEN: Proceedings of the Tenth International Solar Wind Conference. AIP Conference Proceedings, Volume 679, pp. 359-3

Physics

Particle Emission, Solar Wind, Solar Wind Plasma, Sources Of Solar Wind

Scientific paper

We study the evolution of non-linear monochromatic circularly polarised Alfvén waves by solving numerically the time-dependent equations of magnetohydrodynamics in one dimension. We find that in a low β plasma the waves may undergo a parametric decay. This is because the wave excites a density enhancement that travels slower than the wave itself and thus interacts with the wave. When β ~ 1 the density enhancement does not interact with the wave and no decay takes place.

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