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Partículas cargadas energéticamente en la magnetosfera de Saturno: resultados de la Voyager 2
Science (New York, N.Y.)
|January 29, 1982
Resumen
La Voyager 2 detectó flujos de protones y electrones de rayos cósmicos más intensos y variables en Saturno.
Área de la Ciencia:
- Ciencias planetarias Ciencias planetarias.
- Física de la magnetosfera Física de la magnetosfera Física de la magnetosfera Física de la magnetosfera Física de la magnetosfera Física de la magnetosfera Física de la magnetosfera
- Física de los rayos cósmicos Física de los rayos cósmicos
Sus antecedentes:
- La Voyager 2 proporcionó mediciones in situ de la magnetosfera de Saturno.
- Observaciones anteriores establecieron las condiciones de referencia para la magnetosfera de Saturno.
Objetivo del estudio:
- Para presentar los resultados del sistema de rayos cósmicos de la Voyager 2.
- Para analizar las variaciones del flujo de partículas y sus causas.
- Para restringir el dipolo magnético interno de Saturno utilizando firmas de absorción por satélite.
Principales métodos:
- Análisis de los datos del sistema de rayos cósmicos de la Voyager 2.
- Observación de los flujos de protones y electrones en la magnetosfera de Saturno.
- Usando las firmas de absorción de partículas cargadas de Mimas, Encelado y Tetis.
Principales resultados:
- Aumento del flujo de protones (> 0,43 MeV) y mayor variabilidad en los flujos de protones y electrones durante el paso de entrada.
- Explosiones de electrones impulsivas (0.14-1.0 MeV) observadas más allá de los 18 radios de Saturno.
- Disminución del flujo de electrones transitorio cerca de 3 radios de Saturno, no atribuible a Mimas, lo que sugiere material adicional.
Conclusiones:
- Cambios observados en el flujo de partículas atribuidos a las variaciones del viento solar.
- Las firmas de absorción de satélites limitan la inclinación y el desplazamiento del dipolo magnético de Saturno.
- La evidencia sugiere la presencia de material no confirmado o un satélite en la órbita de Mimas.
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