泄漏的日珥
(原标题: A Leaky Solar Prominence)
2025-08-26
浏览次数: 1556
什么在太阳上方盘旋？日珥日珥是从太阳表面喷出的热气的顶部，它被太阳的磁场保持在高空。日珥可以持续数天，可以突然爆炸进入太空，或者只是落回太阳。决定日珥命运的是太阳复杂磁场的变化——磁场的方向可以作为被困太阳粒子的出口。这段3秒（重复）的延时特写视频是本月早些时候在加拿大安大略省渥太华拍摄的。它显示了一个比地球更大的日珥的发展，因为它似乎在一个小时的过程中将太阳等离子体泄漏回太阳。不同寻常的是，日珥看起来是悬浮的——更简单和典型的日珥形成了磁环，连接回地球表面。在这段视频结束许多小时后，盘旋的日珥分解回太阳。探索宇宙：随机APOD生成器
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What's hovering above the Sun? A solar prominence. A prominence is a crest of hot gas expelled from the Sun's surface that is held aloft by the Sun's magnetic field. Prominences can last for days, can suddenly explode into space, or just fall back to the Sun. What decides a prominence's fate is how the Sun's complex magnetic field changes -- the field's direction can act like an offramp for trapped solar particles. The 3-second (repeating) time-lapse featured video was captured earlier this month from Ottawa, Ontario, Canada. It shows the development of a larger-than-Earth prominence as it appears to leak solar plasma back to the Sun, over the course of an hour. What is unusual is that the prominence appears to hover -- more simple and typical prominences form magnetic loops that connect back to the surface. Many hours after this video ended, the hovering prominence disintegrated back into the Sun. Explore the Universe: Random APOD Generator
© Andrea Girones