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| First Name * |
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Bernhard |
| Last Name * |
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Fleck |
| Affiliation * |
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ESA |
| Abstract Type * |
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Poster |
| Title * |
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Mapping the acoustic cut-off frequency in the solar atmosphere |
| Author(s) * |
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S. M. Jefferies, B. Fleck, N. Murphy, F. Berrilli |
| Abstract Session * |
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Chromospheric dynamics |
| Abstract * |
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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, which were obtained with the Magneto-Optical Filter at Two Heights (MOTH-II) and SDO/HMI, with a theoretical local dispersion relation to produce spatial maps of the acoustic cut-off frequency at two heights in the Sun's photosphere. These maps have implications for the mechanical heating of the Sun's upper atmosphere by magneto-acoustic-gravity waves. |
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