Acoustic wave propagation in the solar atmosphere. V. Observations versus simulations

Details Acoustic wave propagation in the solar atmosphere. V. Observations versus simulations Acoustic wave propagation in the solar atmosphere. V. Observations versus simulations

1997-04-08

arxiv.org/abs/astro-ph/9704067v1

Astronomy and Astrophysics

Astrophysics

9 pages, 4 figures. Accepted for publication in the Astronomy and Astrophysics

Scientific paper

We study the evolution of spectra of acoustic waves that are generated in the convection zone and propagate upward into the photosphere, where we compare the simulated acoustic spectra with the spectrum observed in an Fe I line. Although there is no pronounced 3 min component in the spectra generated in the convection zone, there are dominant 3 min features in the theoretical spectra, in agreement with the observed spectrum. We interpret the occurrence of the 3 min features as the response of the solar atmosphere to the acoustic waves which shifts high frequency wave energy to low frequencies. We also find qualitative agreement for the acoustic power between the wave simulations and the observations.

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