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Mediciones a escala de electrones de la reconexión magnética en el espacio
J L Burch1, R B Torbert2, T D Phan3
1Southwest Research Institute, San Antonio, TX, USA. jburch@swri.edu.
Science (New York, N.Y.)
|May 14, 2016
Resumen
La misión Magnetospheric Multiscale de la NASA observó la reconexión magnética, convirtiendo la energía magnética en energía de partículas. Este estudio proporciona evidencia directa de la desmagnetización y aceleración de electrones en la magnetosfera de la Tierra.
Área de la Ciencia:
- Física del plasma
- La astrofísica
- Física del espacio
Sus antecedentes:
- La reconexión magnética es un proceso clave en la física del plasma, convirtiendo la energía magnética en energía de partículas.
- Se produce en entornos de plasma astrofísico y de laboratorio.
Objetivo del estudio:
- Para proporcionar evidencia directa de la desmagnetización y aceleración de electrones durante la reconexión magnética.
- Para observar la conversión de energía magnética en energía de partículas en la magnetosfera de la Tierra.
Principales métodos:
- Utilizando mediciones de alta resolución de tiempo de la misión Magnetospheric Multiscale (MMS) de la NASA.
- Analizando campos eléctricos y corrientes en los sitios de reconexión.
Principales resultados:
- Se encontraron pruebas directas de desmagnetización y aceleración de electrones.
- Observó la conversión de energía magnética en energía cinética y térmica de partículas.
- Identificó la población específica de electrones responsables de llevar corriente debido a la desmagnetización y la aceleración.
Conclusiones:
- La reconexión magnética en la magnetosfera de la Tierra implica una importante desmagnetización y aceleración de electrones.
- La misión MMS capturó con éxito la física detallada de la conversión de energía durante los eventos de reconexión.
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