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Voyager 1: iones y electrones energéticos en la magnetosfera joviana
Science (New York, N.Y.)
|June 1, 1979
Resumen
Las observaciones de rayos cósmicos revelan núcleos energéticos de azufre, sodio y oxígeno dentro de Júpiter.
Área de la Ciencia:
- Ciencias planetarias Ciencias planetarias.
- Física del espacio Física del espacio
- La astrofísica es la astrofísica.
Sus antecedentes:
- La magnetosfera de Júpiter es una región compleja influenciada por el viento solar y los procesos internos.
- El conocimiento previo de la magnetosfera de Júpiter era limitado, especialmente con respecto a la composición y distribución de partículas energéticas.
Objetivo del estudio:
- Para investigar la composición y distribución de las partículas energéticas dentro de la magnetosfera de Júpiter.
- Para caracterizar la cola magnetosférica y las mejoras energéticas de los protones.
Principales métodos:
- Utilizó el subsistema de rayos cósmicos para observaciones in situ.
- Energías de partículas analizadas, composición y distribución espacial.
Principales resultados:
- Descubrieron núcleos energéticos de azufre, sodio y oxígeno (> 7 MeV / núcleo) dentro de la órbita de Io.
- Se observaron iones similares a los rayos cósmicos solares en toda la magnetosfera más allá de 11 radios de Júpiter.
- Se encontró una mejora del 30-70% en los protones energéticos en el hemisferio activo de Júpiter.
- Primeras observaciones de la cola magnetosférica que se extiende hasta 160 radios de Júpiter en la dirección del amanecer.
Conclusiones:
- La magnetosfera de Júpiter alberga poblaciones inesperadas de iones energéticos, incluidos los elementos pesados.
- Las influencias de las partículas energéticas solares se extienden profundamente en la magnetosfera de Júpiter.
- La dinámica energética de las partículas está significativamente influenciada por la rotación de Júpiter y la actividad magnetosférica.
- La cola magnetosférica es más extensa de lo que se entendía anteriormente.
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