埃菲尔铁塔上的日珥
(原标题: Eiffel Tower Prominence on the Sun)
2022-02-16
浏览次数: 15
太阳上那是什么？虽然它看起来像埃菲尔铁塔的流动版本，但它实际上是一个更大的日珥——大约是木星的高度。这个巨大的日珥大约在10天前出现，在太阳表面徘徊了大约两天，然后爆发——向太阳系投掷了日冕物质抛射（CME）。这段特色视频是在这位天体摄影师位于美国田纳西州亨德森维尔的后院拍摄的，显示了一个小时的延时播放，前后都有。那次日冕物质抛射没有影响到地球，但我们的太阳最近释放了其他日冕物质抛射，不仅引发了地球的极光，而且使地球大气层膨胀到足以导致刚刚发射的星链卫星回落。太阳的活动，包括太阳黑子、日珥、日冕物质抛射和耀斑，随着太阳从其11年磁周期的低谷演化而来，持续增加。生日惊喜：APOD在你的生日上放了什么照片？(1995后)
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What's that on the Sun? Although it may look like a flowing version of the Eiffel Tower, it is a solar prominence that is actually much bigger -- about the height of Jupiter. The huge prominence emerged about ten days ago, hovered over the Sun's surface for about two days, and then erupted -- throwing a coronal mass ejection (CME) into the Solar System. The featured video, captured from the astrophotographer's backyard in Hendersonville, Tennessee, USA, shows an hour time-lapse played both forwards and backwards. That CME did not impact the Earth, but our Sun had unleashed other recent CMEs that not only triggered Earthly auroras, but puffed out the Earth's atmosphere enough to cause just-launched Starlink satellites to fall back. Activity on the Sun, including sunspots, prominences, CMEs and flares, continues to increase as the Sun evolves away from a deep minimum in its 11-year magnetic cycle. Birthday Surprise: What picture did APOD feature on your birthday? (post 1995)
© Hawk Wolinski