Carter, B. (2005) MHD Waveguide Modes in Structured Magnetic Flux Tubes. In: British-Romanian-Hungarian N+N+N Workshop for Young Researchers On Plasma- and Astrophysics: from laboratory to outer space Edited by I. Ballai, E. Forgács-Dajka, A. Marcu and K. Petrovay. Publications of the Astronomy Department of the Eötvös University (15). ELTE Sokszorosítóüzeme, Budapest, pp. 115-123.
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Abstract
The propagation of MHD waves in a structured magnetic flux tube embedded within a straight vertical magnetic environment are studied analytically. The motivation behind this study comes from the observations of damped loop oscillations showing that only part of the loop is homogeneous. The magnetic tube considered contains two characteristically distinct parts, namely an internal straight core, and a surrounding uniformly twisted magnetic annulus envelope. The general dispersion relation is derived. Modes of oscillations are examined from this general dispersion relation that is suitable for obtaining information on not just oscillations but some instability properties of this complex tube structure. Both short and long wavelength approximations are considered analytically for the symmetrical mode and with small twist.
| Item Type: | Book Section |
|---|---|
| Additional Information: | PADEU Volume 15 British-Romanian-Hungarian N+N+N Workshop for Young Researchers On Plasma- and Astrophysics: from laboratory to outer space Edited by I. Ballai, E. Forgács-Dajka, A. Marcu and K. Petrovay |
| Subjects: | Q Science / természettudomány > QB Astronomy, Astrophysics / csillagászat, asztrofizika |
| Depositing User: | Emese Kató |
| Date Deposited: | 24 Oct 2024 14:08 |
| Last Modified: | 24 Oct 2024 14:08 |
| URI: | https://real.mtak.hu/id/eprint/207895 |
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