太阳黑子和光桥
(原标题: Sunspot with Light Bridge)
2023-05-17
浏览次数: 17
为什么太阳的一小部分会显得略暗？这是一张太阳黑子的特写照片，太阳表面的洼地比太阳的其他部分略冷，亮度也较低。太阳复杂的磁场通过抑制热物质进入黑子而产生了这些凉爽的区域。太阳黑子可能比地球还大，通常会持续一周左右。活跃区域AR 3297的一部分在五月初穿过太阳，大的太阳黑子下部被一个令人印象深刻的由热的和悬浮的太阳气体组成的光桥横跨。这张高分辨率的照片也清楚地显示了太阳表面是一个由独立的热气体细胞组成的气泡地毯。这些细胞被称为颗粒。太阳粒子直径约1000公里，持续时间仅为15分钟。你的天空惊喜：APOD在你的生日上展示了什么照片？(1995后)
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Why would a small part of the Sun appear slightly dark? Visible is a close-up picture of sunspots, depressions on the Sun's surface that are slightly cooler and less bright than the rest of the Sun. The Sun's complex magnetic field creates these cool regions by inhibiting hot material from entering the spots. Sunspots can be larger than the Earth and typically last for about a week. Part of active region AR 3297 crossing the Sun in early May, the large lower sunspot is spanned by an impressive light bridge of hot and suspended solar gas. This high-resolution picture also shows clearly that the Sun's surface is a bubbling carpet of separate cells of hot gas. These cells are known as granules. A solar granule is about 1000 kilometers across and lasts for only about 15 minutes. Your Sky Surprise: What picture did APOD feature on your birthday? (post 1995)
© Mark Johnston