Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1973
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1973ap%26ss..24...31l&link_type=abstract
Astrophysics and Space Science, Volume 24, Issue 1, pp.31-49
Astronomy and Astrophysics
Astrophysics
48
Scientific paper
Since most Alfvén-waves in the solar wind are observed to come from the Sun, nonlinear wave-particle interactions can be expected to constitute their dominant dissipation process. The growth or damping of two circularly-polarized Alfvén-waves with wave vectors parallel to the ambient magnetic field is calculated using kinetic theory. If the waves are oppositely polarized they both damp proportional to their frequency. If the waves are of the same polarization, both the lower frequency wave and the plasma particles gain energy at the expense of the higher frequency wave. Thus, with increasing distance from the Sun, a steepening of the power spectrum is expected. For waves propagating in the same direction, the interaction is negligible for small β, while it becomes appreciable for β≥10-1. For conditions typical of the solar wind near 1 AU an observed half-hour linearly-polarized wave, for example, with δB=0(B 0) has a damping time of about 10 h.
Lee Martin A.
Völk Heinrich J.
No associations
LandOfFree
Damping and Non-Linear Wave-Particle Interactions of Alfvén-Waves in the Solar Wind 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 Damping and Non-Linear Wave-Particle Interactions of Alfvén-Waves in the Solar Wind, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Damping and Non-Linear Wave-Particle Interactions of Alfvén-Waves in the Solar Wind will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1588312