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Updated: Jul 12, 2026
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Bringing the Visible Universe into Focus with Robo-AO
Published on: February 12, 2013
Un notable evento de auroras en Júpiter observado en el ultravioleta con el telescopio espacial Hubble
Science (New York, N.Y.)
|December 9, 1994
Resumen
Los intensos arcos aurorales de Júpiter, observados a través de imágenes ultravioletas, muestran cambios rápidos que sugieren un vínculo con los sistemas de corrientes planetarias, similares a las auroras de la Tierra. Esta intensa precipitación de electrones calienta significativamente la atmósfera de Júpiter.
Área de la Ciencia:
- Ciencias planetarias Ciencias planetarias.
- Física del espacio Física del espacio
- Ciencias de la atmósfera Ciencias atmosféricas.
Sus antecedentes:
- La aurora de Júpiter es un fenómeno dinámico impulsado por la precipitación de partículas energéticas.
- Comprender las emisiones aurorales de Júpiter es clave para comprender los procesos magnetosféricos.
Objetivo del estudio:
- Para analizar las imágenes ultravioletas de la aurora norte de Júpiter capturadas por el Telescopio Espacial Hubble.
- Investigar las características y las variaciones temporales de los arcos aurorales discretos.
Principales métodos:
- Adquisición de dos conjuntos de imágenes ultravioletas utilizando la cámara de objetos débiles del telescopio espacial Hubble.
- Análisis del brillo del arco auroral y las tasas de emisión.
Principales resultados:
- Se observó un intenso arco auroral discreto en corotación cercana con Júpiter.
- La precipitación máxima de electrones alcanzó aproximadamente 1 W/m2, superando significativamente el calentamiento solar.
- El brillo del arco disminuyó en más de un orden de magnitud en 20 horas.
Conclusiones:
- Los rápidos cambios en el brillo de las auroras jovianas sugieren una conexión con variaciones a gran escala en el sistema actual de Júpiter.
- Este comportamiento es análogo a las auroras discretas observadas en la Tierra.
- La precipitación de partículas aurorales juega un papel importante en el calentamiento de la atmósfera superior de Júpiter y en la conducción de los vientos termosféricos.
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