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La interacción de Plutón con su entorno espacial: Viento solar, partículas energéticas y polvo
F Bagenal1, M Horányi2, D J McComas3
1Laboratory of Atmospheric and Space Physics, University of Colorado, Boulder, CO 80600, USA. bagenal@colorado.edu.
Resumen
La misión New Horizons reveló a Plutón
Área de la Ciencia:
- Ciencias planetarias
- Heliofísica
- Física del espacio
Sus antecedentes:
- La nave espacial New Horizons realizó un sobrevuelo de Plutón el 14 de julio de 2015.
- Comprender el entorno espacial de Plutón es crucial para la ciencia planetaria.
Objetivo del estudio:
- Para medir el entorno espacial cerca de Plutón durante el sobrevuelo de New Horizons.
- Para analizar la interacción entre Plutón y el viento solar.
Principales métodos:
- Utilizó tres instrumentos a bordo de la nave espacial New Horizons: SWAP, PEPSSI y el Contador de Polvo para Estudiantes de Venetia Burney.
- Se midió el viento solar, las partículas energéticas y la densidad de polvo en las cercanías de Plutón.
Principales resultados:
- El instrumento Solar Wind Around Pluto (SWAP) detectó una región de interacción compacta hacia el sol de Plutón (dentro de 6 radios de Plutón).
- Los datos de la Investigación Científica del Espectrómetro de Partículas Energéticas de Plutón (PEPSSI) indicaron aceleración / deflexión de iones y se observaron flujos de partículas supratermales reducidos en la estela de Plutón.
- El Contador de Polvo Estudiantil Venetia Burney estableció un límite superior para la densidad de polvo en el sistema de Plutón (<4,6 km-3).
Conclusiones:
- La región de interacción de Plutón con el viento solar es más pequeña de lo esperado, lo que sugiere un escape atmosférico reducido y un alto flujo de viento solar.
- El comportamiento de las partículas observadas y la baja densidad de polvo proporcionan información sobre el entorno espacial único del sistema de Plutón.
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