The non-adiabatic high-degree f-mode

Authors

  • Y.D. Zhugzhda,

    Corresponding author
    1. Kiepenheuer-Institut für Sonnenphysik, Schöneckstr. 6, 79104 Freiburg, Germany
    2. Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation (IZMIRAN), Russian Academy of Sciences, Troitsk, Moscow Region 142190, Russia
    • Kiepenheuer-Institut für Sonnenphysik, Schöneckstr. 6, 79104 Freiburg, Germany
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  • M. Roth

    1. Kiepenheuer-Institut für Sonnenphysik, Schöneckstr. 6, 79104 Freiburg, Germany
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Abstract

The current theory of the high-degree solar f-mode based on an adiabatic approximation is in contradiction with obser-vations, since the f-mode is visible in intensity oscillations of the Sun. As a possible solution we present an universal analytical treatment for a non-adiabatic f-mode. This non-adiabatic theory provides the explanation of brightness oscilla-tions due to the f-mode. We find that the non-adiabatic effects do not lead to a damping of the f-mode since the dispersion relation is the same as in the adiabatic approximation (© 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

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