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Transporte de flujo magnético en el sol
Science (New York, N.Y.)
|August 18, 1989
Resumen
El flujo magnético solar se dispersa desde los cinturones de manchas solares para formar un fuerte campo polar cerca del mínimo solar. Este proceso, impulsado por la convección y la circulación, está respaldado por el campo magnético interplanetario y las observaciones del agujero coronal.
Área de la Ciencia:
- Física solar Física solar es la física de la energía solar.
- La magnetohidrodinámica es una dinámica magnético-hidrodinámica.
- La física del plasma es la física del plasma.
Sus antecedentes:
- El flujo magnético solar se origina en cinturones de manchas solares de baja latitud.
- La convección supergranular y la circulación meridional dispersan este flujo a través de latitudes.
- El ciclo solar de 11 años influye en la distribución del campo magnético.
Objetivo del estudio:
- Para investigar cómo los procesos de transporte solar dan forma al campo magnético polar.
- Para entender la formación de la estructura de "nudo superior" del campo polar.
- Para conectar el transporte simulado con la evidencia observacional cerca del mínimo solar.
Principales métodos:
- Utilizando simulaciones numéricas del transporte del flujo magnético solar.
- Modelado de la interacción de los movimientos convectivos y la circulación meridional.
- Comparación de los resultados de la simulación con el campo magnético interplanetario y los datos de agujeros coronales polares.
Principales resultados:
- Las simulaciones demuestran que la dispersión del flujo conduce a un fuerte campo polar.
- La estructura de campo polar "topknot" es reproducida por los modelos.
- Las tasas de difusión y flujo simuladas se alinean con las propiedades observadas del campo magnético solar.
Conclusiones:
- Los procesos de transporte solar son cruciales para generar el campo magnético polar.
- El modelo apoya la evidencia observacional de un fuerte campo polar cerca del mínimo solar.
- Comprender estos mecanismos de transporte es clave para la predicción del ciclo solar.
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