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Imagen de las auroras de Júpiter de las emisiones de H3+ en la banda de 3-4 micrómetros

R Baron¹, R D Joseph, T Owen

¹Institute for Astronomy, University of Hawaii, Honolulu 96822, USA.

|October 10, 1991

Resumen

Nuevas imágenes revelan que las auroras de Júpiter son dinámicas, con emisiones excitadas de H3+ (catión trihidrógeno) que varían rápidamente. Estas exhibiciones aurorales pueden ser impulsadas por procesos diferentes a las emisiones ultravioleta e infrarroja previamente entendidas.

Área de la Ciencia:

Ciencias planetarias Ciencias planetarias.
Física del espacio Física del espacio
La espectroscopia es una técnica de espectroscopia.

Sus antecedentes:

El catión trihidrógeno (H3+) es una molécula clave para el estudio de las regiones aurorales de Júpiter.
Estudios anteriores han utilizado H3+ para sondear las condiciones de las auroras en Júpiter.

Objetivo del estudio:

Para presentar imágenes de alta resolución espacial de las regiones aurorales de Júpiter utilizando emisiones de H3+.
Para investigar la distribución espacial y la variabilidad temporal de las emisiones de H3+ en la ionosfera de Júpiter.

Principales métodos:

Adquisición de imágenes de Júpiter en longitudes de onda sensibles a la emisión de H3+.
Análisis de la distribución espacial y las variaciones de intensidad de las emisiones aurorales de H3+.

Principales resultados:

Se obtuvieron imágenes de alta resolución espacial de las auroras polares de Júpiter.
Se observó que la intensidad de la emisión auroral H3+ varía en escalas de tiempo tan cortas como una hora.
La distribución espacial de las emisiones de H3+ mostró sólo una correlación parcial con la actividad de las auroras ultravioleta e infrarroja.

Conclusiones:

Las emisiones de H3+ proporcionan información valiosa sobre la dinámica de las auroras de Júpiter.
La rápida variabilidad sugiere que hay procesos dinámicos en juego en la atmósfera superior de Júpiter.
Los procesos aurorales que controlan las emisiones de H3+ pueden diferir de los responsables de las emisiones UV e IR.

Palabras clave:

La disciplina de la NASA es la exobiología.La Orden de Disciplina de la NASA número 52-10-10 fue aprobada por la NASA.Programa de exobiología de la NASA Programa de exobiología de la NASA.No perteneciente al Centro de la NASA.

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