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Observaciones ultravioletas extremas del encuentro del Voyager 2 con Júpiter
Resumen
La Voyager 2 es una nave espacial.
Área de la Ciencia:
- Ciencias planetarias Ciencias planetarias.
- Física del espacio Física del espacio
- La espectroscopia es una técnica de espectroscopia.
Sus antecedentes:
- La Voyager 1 proporcionó los primeros datos del espectrómetro ultravioleta de Júpiter.
- El encuentro de la Voyager 2 amplió las observaciones de los fenómenos jovianos.
Objetivo del estudio:
- Para analizar las observaciones espectrales ultravioletas extremas del encuentro del sistema joviano de la Voyager 2.
- Para comparar los hallazgos con los datos de la Voyager 1 e investigar los cambios en el toro plasmático de Io y las zonas aurorales jovianas.
Principales métodos:
- Observaciones espectrales en el ultravioleta extremo (UVE).
- Análisis de la intensidad de la radiación y la temperatura del plasma.
- Correlación de las zonas aurorales con las proyecciones del campo magnético.
- Detección de emisiones de hidrógeno molecular.
- Medición de las emisiones de hidrógeno Lyman alfa.
- Observación de la ocultación estelar.
Principales resultados:
- La intensidad de radiación del toro plasmático de Io se duplicó, con una disminución del 30% en la temperatura del plasma entre los encuentros de la Voyager.
- Las zonas aurorales de altas latitudes estaban vinculadas a la proyección magnética del toro plasmático.
- Las emisiones de hidrógeno molecular detectadas en regiones ecuatoriales indicaron una precipitación de electrones en todo el planeta.
- La emisión de hidrógeno Lyman alfa medida a 1 kilorayleigh en el lado oscuro de Júpiter.
Conclusiones:
- Las observaciones de la Voyager 2 ampliaron los hallazgos de la Voyager 1, revelando cambios dinámicos en la magnetosfera y la atmósfera de Júpiter.
- La evidencia apoya la conexión entre el toro de plasma de Io y la actividad auroral de Júpiter.
- La precipitación de electrones es un factor significativo en las emisiones atmosféricas de Júpiter.
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