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Solar-Atmosphere Oscillations due to the Instability of Acoustic-Gravity Waves

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Abstract

In this paper, we study the possibility for generating oscillations of the nonisothermal solar atmosphere. Analytical solutions describing wave perturbations in the entire solar atmosphere are sought for the first time. Based on the model temperature profile, we find an analytical dependence for the fundamental mode of fast acoustic-gravity waves and draw a conclusion on the limiting acoustic frequency in the solar atmosphere. Using this solution, we study the instability of acoustic-gravity waves, estimate the instability parameters, and compare them with the characteristics of the five-minute oscillations of the solar atmosphere.

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Authors and Affiliations

  1. Nizhny Novgorod State Technical University, Nizhny Novgorod, Russia

    O. N. Savina

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  1. O. N. Savina
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Savina, O.N. Solar-Atmosphere Oscillations due to the Instability of Acoustic-Gravity Waves. Radiophysics and Quantum Electronics 44, 691–696 (2001). https://doi.org/10.1023/A:1013007025308

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  • DOI: https://doi.org/10.1023/A:1013007025308

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