| Issue |
A&A
Volume 409, Number 3, October III 2003
|
|
|---|---|---|
| Page(s) | 1085 - 1095 | |
| Section | The Sun | |
| DOI | https://doi.org/10.1051/0004-6361:20031037 | |
| Published online | 17 November 2003 | |
Torsional magnetic tube waves in stellar convection zones
I. Analysis of wave generation and application to the Sun
1
Department of Physics, University of Texas at Arlington, Arlington, TX 76019, USA
2
Institut für Theoretische Astrophysik der Universität Heidelberg, Tiergartenstr. 15, 69121 Heidelberg, Germany
Corresponding author: P. Ulmschneider, ulmschneider@ita.uni-heidelberg.de
Received:
15
April
2003
Accepted:
1
July
2003
An analytic approach to the generation of torsional magnetic tube waves in stellar convection zones is presented. The waves are produced in a thin, vertically oriented magnetic flux tube embedded in a magnetic field-free, turbulent and compressible external medium and are excited by external turbulent flows. A theory for this interaction is developed and used to compute the wave energy spectra and fluxes carried by torsional tube waves in the solar atmosphere. We find that these tube waves have a characteristic cutoff frequency.
Key words: methods: numerical / Sun: chromosphere / Sun: corona / Sun: magnetic fields / MHD / waves
© ESO, 2003
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