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Propagation speeds and acoustic damping of waves in magnetic flux tubes

โœ Scribed by H. C. Spruit

Publisher
Springer
Year
1982
Tongue
English
Weight
690 KB
Volume
75
Category
Article
ISSN
0038-0938

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โœฆ Synopsis

Propagation speeds are derived for the wave modes of a thin magnetic tube in an otherwise homogeneous magnetized or unmagnetized fluid. These results generalize results obtained by previous authors. There are three types of wave, a (torsional) Alfv6n wave and two waves which are specific for the thin tube. These are named the longitudinal and transversal tube waves, according to their polarization properties. They can be camped by radiating an MHD or acoustic wave into the surroundings of the tube. Conditions for occurrence of this acoustic damping, and the damping rates, are derived. The behavior of the waves in the solar convection zone and corona is discussed.

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