Nonlinear interaction between Alfvén and acoustic-gravity waves in the solar atmosphere

Details Nonlinear interaction between Alfvén and acoustic-gravity waves in the solar atmosphere Nonlinear interaction between Alfvén and acoustic-gravity waves in the solar atmosphere

Jul 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005astl...31..474p&link_type=abstract

Astronomy Letters, vol. 31, Issue 7, p.474-486

Astronomy and Astrophysics

Astronomy

Sun - Atmosphere - Waves - Mhd

Scientific paper

Based on a plane-parallel isothermal model solar atmosphere permeated by a uniform magnetic field directed against the action of gravity, we considered the nonlinear interaction between vertically propagating Alfvén and acoustic-gravity waves. We established that Alfvén waves are efficiently generated at the difference and sum frequencies. We ascertained that no acoustic-gravity waves are formed at the corresponding combination frequencies. A horizontal magnetohydrodynamic wind whose direction changes with height was found to be formed in the solar atmosphere at zero difference frequency.

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