Other
Scientific paper
Sep 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aipc..679..566d&link_type=abstract
SOLAR WIND TEN: Proceedings of the Tenth International Solar Wind Conference. AIP Conference Proceedings, Volume 679, pp. 566-5
Other
2
Particle Emission, Solar Wind, Solar Wind Plasma, Sources Of Solar Wind
Scientific paper
The stability of monochromatic large-amplitude Alfvén waves is investigated via MHD numerical simulations. In a compressible medium, such as the heliospheric environment, these waves are subject to the parametric decay instability. The mother wave decays in a compressive mode, that soon steepens and dissipates thermal energy, and in a backscattered Alfvénic mode with lower amplitude and frequency, thus starting an inverse cascade. This well known process is shown here to be very robust, since it occurs basically unchanged regardless of the dimensionality of the spatial domain and, above all, even linear or arc-polarized waves in oblique propagation, most often found in solar wind data, appear to behave in the same way. This physical process could help to explain the observed radial decrease of cross helicity in the fast polar wind, as measured by Ulysses.
Del Zanna Luca
Londrillo Pasquale
Velli M. M.
No associations
LandOfFree
Nonlinear evolution of large-amplitude Alfvén waves in parallel and oblique propagation does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Nonlinear evolution of large-amplitude Alfvén waves in parallel and oblique propagation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nonlinear evolution of large-amplitude Alfvén waves in parallel and oblique propagation will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1149529