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Updated: Jul 12, 2026

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CO2 Photoreduction to CH4 Performance Under Concentrating Solar Light
Published on: June 12, 2019
Una nueva luz en el corazón de la oscuridad de la cromosfera solar
Resumen
Un componente frío de la cromosfera solar, tan bajo como 3500 K, ha sido detectado utilizando espectros de monóxido de carbono. Este componente cubre la mayor parte de la superficie solar tranquila y está vinculado a la expansión del gas.
Área de la Ciencia:
- Física solar Física solar es la física de la energía solar.
- Estructura de la cromosfera La estructura de la cromosfera
Sus antecedentes:
- Los espectros de monóxido de carbono solar sugieren que un componente frío (< 4000 K) coexiste con la cromosfera solar caliente (60007000 K).
- La existencia y la ubicación de este componente frío han sido objeto de debate.
- Probar el componente frío es un desafío debido a la contaminación fotosférica.
Objetivo del estudio:
- Para investigar la existencia, las propiedades y la ubicación de un componente frío en la cromosfera solar.
- Para utilizar la emisión de monóxido de carbono más allá de la extremidad solar para el análisis.
Principales métodos:
- Adquisición y análisis de nuevos espectros solares de alta resolución.
- Observación de la emisión de monóxido de carbono justo más allá de la extremidad solar para evitar la contaminación fotosférica.
- Mediciones de temperatura y cobertura del componente de refrigeración.
Principales resultados:
- El componente frío tiene temperaturas tan bajas como 30003500 K.
- Este componente cubre el 50-85% de la superficie solar tranquila.
- Un rápido aumento de la temperatura a los niveles cromosféricos normales ocurre a 900 1100 km de altitud.
- Las grandes velocidades horizontales indican la expansión adiabática supersónica del gas ascendente en los gránulos que se sobrepasan.
Conclusiones:
- Se confirma y caracteriza el componente frío de la cromosfera solar.
- Su significativa cobertura superficial y su ubicación sugieren un papel dinámico en los procesos cromosféricos.
- Los hallazgos apoyan un modelo en el que la expansión supersónica del gas mantiene este componente frío.
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