揭开太阳日冕的面纱
(原标题: The Solar Corona Unwrapped)
2024-04-05
浏览次数: 14
这张创造性的合成图像详细描绘了两次日全食期间太阳外部大气的动态变化。2017年在怀俄明州杰克逊霍尔看到的日全食（下图）和2023年在西澳大利亚埃克斯茅斯看到的日全食（下图），日冕从日全食边缘的完整圆圈变成了一个矩形并被镜像。2017年的日食接近太阳11年活动周期中的最小值，而2023年的日食更接近太阳的最大值。2023年的日冕暗示了活跃太阳的截然不同的特征，沿太阳边缘出现了许多流光和粉红色的日珥。当然，日冕只有站在月球的阴影下才容易被肉眼看到。NASA报道：2024年4月8日的日全食
查看原文解释
Changes in the alluring solar corona are detailed in this creative composite image mapping the dynamic outer atmosphere of the Sun during two separate total solar eclipses. Unwrapped from the complete circle of the eclipsed Sun's edge to a rectangle and mirrored, the entire solar corona is shown during the 2017 eclipse (bottom) seen from Jackson Hole, Wyoming, and the 2023 eclipse from Exmouth, Western Australia. While the 2017 eclipse was near a minimum in the Sun's 11 year activity cycle, the 2023 eclipse was closer to solar maximum. The 2023 solar corona hints at the dramatically different character of the active Sun, with many streamers and pinkish prominences arising along the solar limb. Of course, the solar corona is only easily visible to the eye while standing in the shadow of the Moon. NASA Coverage: Total Solar Eclipse of 2024 April 8
© Barden Ridge Observatory