Marcu, A and Ballai, I. (2005) MHD waves in penumbral structures. 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. 102-113.
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Abstract
In this paper we study the oscillations of a magnetic medium periodic in the x-direction with B parallel to z in the presence of a steady equilibrium field aligned flow. The case with no gravity and stepwise profile for B(x), allowing a normal mode analysis, is studied and the dispersion relation for linear compressional waves is derived. The propagation of waves is studied in particular case modelling the propagation of waves in the penumbral filamentary structures in the photosphere.
| 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 |
| Uncontrolled Keywords: | Sun: magnetohydrodynamics(MHD) waves, Sun: magnetic field |
| Subjects: | Q Science / természettudomány > QB Astronomy, Astrophysics / csillagászat, asztrofizika |
| Depositing User: | Emese Kató |
| Date Deposited: | 24 Oct 2024 13:58 |
| Last Modified: | 24 Oct 2024 13:58 |
| URI: | https://real.mtak.hu/id/eprint/207892 |
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