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Updated: Jul 12, 2026

11:34
Scattering And Absorption of Light in Planetary Regoliths
Published on: July 1, 2019
Resultados de la composición iónica durante el encuentro del explorador internacional de cometas con Giacobini-Zinner
Resumen
La nave espacial International Cometary Explorer detectó varios iones, incluidos los relacionados con el agua y los iones del viento solar, dentro del coma del cometa Giacobini-Zinner. Estos hallazgos apoyan los modelos de desgasificación cometaria y la interacción del viento solar.
Área de la Ciencia:
- * * Física del espacio Física del espacio
- * Ciencia de los cometas.
- * Física del Plasma es la Física del Plasma.
Sus antecedentes:
- * Comprender la composición de los cometas y su interacción con el viento solar es crucial para la ciencia planetaria.
- * Las comas cometarias son regiones de gas y polvo que rodean el núcleo, formadas por sublimación.
Objetivo del estudio:
- * Para analizar la composición iónica y la dinámica dentro de la coma del cometa Giacobini-Zinner.
- * Para investigar la interacción entre los iones cometarios y el viento solar.
Principales métodos:
- * Mediciones in situ realizadas por la nave espacial ICE (Explorador Internacional de Cometas).
- * Utilizando un instrumento de composición iónica sensible a las relaciones de masa-carga específicas (1.4-3 y 14-33 amu/e).
- * Análisis de velocidades de iones que van desde 80 hasta 463 km/s.
Principales resultados:
- * Detección de iones relacionados con el agua (H2O+, H3O+), CO+, HCO+ y potenciales Na+ y Mg+.
- * Identificación de los iones de helio de origen del viento solar (He2+).
- * Distribuciones de velocidad distintas observadas para iones pesados (iones recolectores) y ligeros (decelerados).
Conclusiones:
- * Los iones cometarios son recogidos por el campo eléctrico de movimiento del viento solar.
- * Los iones de luz son desacelerados hacia el eje de la cola del cometa.
- * Los resultados se alinean con los modelos de cometas compuestos de hielo de agua y otros materiales que se ionizan e interactúan con el viento solar.
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