Waves in Inclined Solar Magnetic Flux Tubes

Details Waves in Inclined Solar Magnetic Flux Tubes Waves in Inclined Solar Magnetic Flux Tubes

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...211.8001r&link_type=abstract

American Astronomical Society, AAS Meeting #211, #80.01; Bulletin of the American Astronomical Society, Vol. 39, p.870

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Scientific paper

The solar chromosphere shows numerous needle-shaped extensions into the overlying corona, in which plasma shoots up at high speeds. These phenomena are variously called spicules, mottles, or dynamic fibrils, depending on where and how they are observed on the Sun. Many different explanations have been suggested for how these phenomena might be generated in the dynamic solar atmosphere. The currently most popular suggestion is that global solar oscillations propagate as longitudinal waves along magnetic flux tubes. These long-period waves suffer from a cutoff restriction, but if the flux tubes are sufficiently inclined to the vertical they can propagate nevertheless. We will analyze the cutoff behavior of longitudinal and also other wave modes, namely kink flux tube waves inside these inclined tubes and show that they have better chances to transport energy upward. Such waves must therefore be taken into account in order to understand spicules.
This work is supported by NSF grant ATM 05-38278

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