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Características parecidas a chorros a pequeña escala en las cromosferas penumbrales.
Y Katsukawa1, T E Berger, K Ichimoto
1National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan. yukio.katsukawa@nao.ac.jp
Science (New York, N.Y.)
|December 8, 2007
Resumen
Los científicos descubrieron pequeños y rápidos chorros en las manchas solares llamados microjets penumbrales. Estos chorros, posiblemente de reconexión magnética, pueden calentar la corona solar por encima de las manchas solares.
Área de la Ciencia:
- Física solar Física solar es la física de la energía solar.
- La astronomía es la astronomía.
- Física del plasma es la física del plasma.
Sus antecedentes:
- Las manchas solares exhiben campos magnéticos complejos en su penumbra.
- Los chorros cromosféricos son fenómenos dinámicos observados en la atmósfera solar.
Objetivo del estudio:
- Para identificar y caracterizar las características de chorro a escala fina en las cromosferas de las manchas solares.
- Investigar el origen y las implicaciones potenciales de estos micro chorros.
Principales métodos:
- Observación de una mancha solar utilizando el Telescopio Óptico Solar del satélite Hinode.
- Análisis de secuencias de imágenes capturadas a través de un filtro de línea Ca II H.
Principales resultados:
- Descubrimiento de micro chorros penumbrales, caracterizados por una anchura de 400 km y una duración de menos de 1 minuto.
- Estas características son difíciles de detectar con las capacidades de observación existentes.
Conclusiones:
- Los microjets penumbrales pueden originarse de la reconexión magnética dentro del complejo campo magnético de la mancha solar.
- Estos microjets tienen el potencial de contribuir al calentamiento coronal por encima de las manchas solares.
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