On the Reflection of Torsional Alfvén Waves from the Solar Transition Region
| Autor: | Yuriy T. Tsap, Yulia Kopylova |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Physics
010504 meteorology & atmospheric sciences Solar transition region Boundary (topology) Astronomy and Astrophysics 01 natural sciences Corona Magnetic flux Computational physics Space and Planetary Science Physics::Space Physics 0103 physical sciences Jump Reflection (physics) Astrophysics::Solar and Stellar Astrophysics Reflection coefficient 010303 astronomy & astrophysics Chromosphere 0105 earth and related environmental sciences |
| Zdroj: | Solar Physics. 296 |
| ISSN: | 1573-093X 0038-0938 |
| DOI: | 10.1007/s11207-020-01753-6 |
| Popis: | On the basis of the two-layer model, we investigate the reflection of linear torsional Alfven waves propagating in a thin magnetic flux tube from the solar transition region. As distinguished from Hollweg (Astrophys. J. 277, 392, 1984), the density jump across the transition region modeled by a sharp boundary is taken into account. A new expression for the determination of the reflection coefficient is proposed. Weakly damping Alfven modes with periods from a few tens of seconds to a few minutes can quite effectively penetrate from the chromosphere to the corona and vice versa. |
| Databáze: | OpenAIRE |
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