Global Acoustic Resonance in a Stratified Solar Atmosphere

Details Global Acoustic Resonance in a Stratified Solar Atmosphere Global Acoustic Resonance in a Stratified Solar Atmosphere

Sep 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008soph..251..523t&link_type=abstract

Solar Physics, Volume 251, Issue 1-2, pp. 523-531

Physics

6

Waves: Acoustic, Oscillations: Solar, Chromosphere: Models, Heating: Chromospheric

Scientific paper

The upward propagation of linear acoustic waves in a gravitationally stratified solar atmosphere is studied. The wave motion is governed by the Klein Gordon equation, which contains a cutoff frequency introduced by stratification. The acoustic cutoff may act as a potential barrier when the temperature decreases with height. It is shown that waves trapped below the barrier could be subject to a resonance that extends into the entire unbounded atmosphere of the Sun. The parameter space characterizing the resonance is explored.

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