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arXiv · 1910.03198

Observed local dispersion relations for magneto-acoustic-gravity waves in the Sun's atmosphere: Mapping the acoustic cut-off frequency

Stuart M. Jefferies·Bernhard Fleck·Neil Murphy·Francesco Berrilli
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Abstract

We present the observed local dispersion relations for magneto-acoustic-gravity waves in the Sun's atmosphere for different levels of magnetic field strength. We model these data with a theoretical local dispersion relation to produce spatial maps of the acoustic cut-off frequency in the Sun's photosphere. These maps have implications for the mechanical heating of the Sun's upper atmosphere, by magneto-acoustic-gravity waves, at different phases of the solar magnetic activity cycle.

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Stuart M. Jefferies, Bernhard Fleck, Neil Murphy, Francesco Berrilli. 2019-10-08. Observed local dispersion relations for magneto-acoustic-gravity waves in the Sun's atmosphere: Mapping the acoustic cut-off frequency. https://doi.org/10.3847/2041-8213%2Fab4719

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