Solar Physics

, Volume 251, Issue 1–2, pp 523–531 | Cite as

Global Acoustic Resonance in a Stratified Solar Atmosphere

HELIOSEISMOLOGY, ASTEROSEISMOLOGY, AND MHD CONNECTIONS

Abstract

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.

Keywords

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

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Copyright information

© Springer Science+Business Media B.V. 2008

Authors and Affiliations

  1. 1.SP²RC, Department of Applied MathematicsUniversity of SheffieldSheffieldUK

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