MHD Stabiblity of a Solar Prominence Embedded in an External Vertical Magnetic Field
We examine the linear MHD-stability of a solar quiescent prominence describedby the two-dimensional model of Osherovich (1989). This equilibrium modeltakes into account explicitly the influence of an external vertical magnetic field sothat the prominence can be situated on the boundary between two r...
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| Formato: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2006 |
| País: | México |
| Recursos: | Universidad Nacional Autónoma de México |
| Repositorio: | Redalyc-UNAM |
| OAI Identifier: | oai:redalyc.org:57142109 |
| Acesso em linha: | https://www.redalyc.org/articulo.oa?id=57142109 |
| Access Level: | acceso abierto |
| Palavra-chave: | Física, Astronomía y Matemáticas MHD: WAVES SUN:PROMINENCES SUN: OSCILLATIONS |
| Resumo: | We examine the linear MHD-stability of a solar quiescent prominence describedby the two-dimensional model of Osherovich (1989). This equilibrium modeltakes into account explicitly the influence of an external vertical magnetic field sothat the prominence can be situated on the boundary between two regions of oppositemagnetic polarity. We analyze its stability against perturbations within idealMHD using a numerical method based on the Energy Principle of Bernstein et al.(1958). In our study specific cases of physical parameters observed in quiescentprominence are considered. For completeness we present as well results for otherparameters which may perhaps be applicable to solar-type stars. |
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