活跃太阳的偏食

2022年11月2日

A Partial Eclipse of an Active Sun
Video Credit: Ralf Burkart; h/t Maciej Libert (AG)

Explanation: Watch for three things in this unusual eclipse video. First, watch for a big dark circle to approach from the right to block out more and more of the Sun. This dark circle is the Moon, and the video was made primarily to capture this partial solar eclipse last week. Next, watch a large solar prominence hover and shimmer over the Sun’s edge. A close look will show that part of it is actually falling back to the Sun. The prominence is made of hot plasma that is temporarily held aloft by the Sun’s changing magnetic field. Finally, watch the Sun’s edge waver. What is wavering is a dynamic carpet of hot gas tubes rising and falling through the Sun’s chromosphere — tubes known as spicules. The entire 4-second time-lapse video covers a time of about ten minutes, although the Sun itself is expected to last another 5 billion years.

Partial Solar Eclipse in October 2022: Notable Submissions to APOD

Tomorrow’s picture: open space

活跃太阳的偏食
视频提供: Ralf Burkart；h/t Maciej Libert（AG）

说明: 在这部不寻常的日食视频里，有3个值得留意的看点。首先，是从右侧靠近，并遮挡越来越多太阳盘面的的大黑盘。这个黑盘是月亮，而这部视频拍摄的重点，就是要记录发生在上星期的日偏食。接着，记得观赏悬在太阳边缘上空的摇曳庞大日珥。如你细看，可见到部分的日珥实际上正往太阳回落。而成分是炽热等离子的日珥，则是受到太阳变化不定磁场的抬升而暂时悬浮的结构。最后，请看太阳摇晃不定的边缘。它之所以看来会不断摇晃，其实是因为太阳色球层里地毯状的管状炽热气体（针状体）起起伏伏所致。尽管太阳的预期寿命还有50亿年，但这部全长4秒的缩时视频，只呈现了其中的10分钟。

2022年10月的日偏食: 向APOD提交的值得注意的照片

明日的图片: open space