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Updated: Jul 12, 2026
11:20
Investigation of Early Plasma Evolution Induced by Ultrashort Laser Pulses
Published on: July 2, 2012
El entorno de plasma caliente en Júpiter: resultados de Ulises
Science (New York, N.Y.)
|September 11, 1992
Resumen
La nave espacial Ulysses reveló que la magnetosfera de Júpiter está muy extendida. Se descubrieron rayos de partículas intensos en la magnetosfera de latitud alta, al atardecer, que probablemente causaron auroras.
Área de la Ciencia:
- Física del espacio Física del espacio
- Física del plasma es la física del plasma.
- Ciencias planetarias Ciencias planetarias.
Sus antecedentes:
- La misión Ulysses proporcionó mediciones in situ del entorno de plasma caliente de Júpiter.
- Estudios anteriores, como el de la Voyager, habían identificado un límite interno de la magnetosfera.
Objetivo del estudio:
- Para detallar nuevos descubrimientos sobre la magnetosfera extendida y el plasma caliente de Júpiter.
- Para analizar el comportamiento y la composición de las poblaciones de plasma durante el sobrevuelo de Ulises.
Principales métodos:
- Mediciones in situ de plasma caliente e iones energéticos utilizando la nave espacial Ulysses.
- Análisis de flujos iónicos, anisotropías y características del haz de partículas.
Principales resultados:
- La magnetosfera de Júpiter se extiende significativamente, con la magnetopausa en ~105 radios de Júpiter.
- Las poblaciones de iones pesados (azufre, oxígeno, sodio) aumentaron bruscamente alrededor del 86 de radio de Júpiter.
- Se observaron intensos haces de iones y electrones alineados con el campo en el lado oscuro de la magnetosfera en altas latitudes.
Conclusiones:
- La magnetosfera joviana está más extendida de lo que se pensaba anteriormente.
- La composición del plasma sugiere abundancias dependientes de la latitud de especies derivadas de Júpiter.
- Los rayos de partículas descubiertos son una fuente probable de auroras polares.
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