Abstract
The upward propagation of linear acoustic waves in a gravitationally stratified atmosphere is studied. The wave motion is governed by the Klein-Gordon equation which contains a cut-off frequency introduced by stratification. The acoustic cut-off 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 which extends into the entire unbounded atmosphere. The parameter space characterizing the resonance is explored.
Original language | English |
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Pages (from-to) | 86-89 |
Number of pages | 4 |
Journal | Proceedings of the International Astronomical Union |
Volume | 3 |
Issue number | S247 |
DOIs | |
Publication status | Published - Sept 2007 |
Keywords
- Hydrodynamics
- Sun: atmosphere
- Sun: chromosphere
- Sun: Corona
- Sun: oscillations
- Sun: photosphere
- Waves