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Updated: May 8, 2026
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Investigation of Early Plasma Evolution Induced by Ultrashort Laser Pulses
Published on: July 2, 2012
No hay flujo de plasma meridional en la región de transición heliosheath
Robert B Decker1, Stamatios M Krimigis, Edmond C Roelof
1Applied Physics Laboratory, The Johns Hopkins University, Laurel, Maryland 20723, USA. robert.decker@jhuapl.edu
Nature
|September 8, 2012
Resumen
La Voyager 1 detectó un flujo de plasma radial cercano a cero en la heliosfera, lo que contradice las simulaciones. Las mediciones del flujo meridional también mostraron velocidades consistentes con cero, lo que sugiere un comportamiento inesperado del plasma más allá de la influencia del viento solar.
Área de la Ciencia:
- Física del espacio Física del espacio
- Heliofísica es la heliofísica.
- Física del plasma es la física del plasma.
Sus antecedentes:
- La Voyager 1 entró en la cubierta heliocéntrica, una región de plasma caliente más allá del choque de terminación del viento solar.
- Las simulaciones predijeron que el plasma heliosheath fluiría meridionalmente a lo largo de la heliopausa, separando el plasma solar e interestelar.
Objetivo del estudio:
- Para investigar la dinámica del flujo de plasma en la envoltura heliosférica utilizando los datos de la Voyager 1.
- Para probar las predicciones teóricas de la deflexión del plasma en la heliopausa.
Principales métodos:
- Análisis de los datos de velocidad de flujo de plasma de Voyager 1 durante un período de dos años.
- Utilizando reorientaciones de naves espaciales para permitir que el instrumento de partículas cargadas de baja energía para medir el flujo meridional.
Principales resultados:
- Se observó una desaceleración gradual del flujo de plasma radial a una velocidad cercana a cero en abril de 2010.
- Se midió una velocidad de flujo meridional de +3 ± 11 km/s, estadísticamente consistente con cero.
Conclusiones:
- Los datos de Voyager 1 desafían los modelos existentes del flujo de plasma de la cubierta heliosférica.
- El flujo meridional casi cero observado sugiere una interacción diferente en la heliopausa de lo que se esperaba anteriormente.
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