太阳向地球发出强耀斑

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图片来源:NASA

太阳在星期二向地球方向发出了另一次强烈的耀斑,这是近期一系列太阳爆发中最强烈的一次,也是过去25年来观测到的最强烈的爆发之一。这次爆发属于X级耀斑,并且似乎来自太阳的活动区域9415。

太阳耀斑是太阳最强大的辐射之一,其爆发力相当于数十亿兆吨TNT炸药。它们是由磁能的突然释放引起的。事实上,这种爆发可以将太阳粒子加速到极高的速度,接近光速。星期二的耀斑伴随着一团带电的磁性气体云,称为日冕物质抛射,或CME。


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考虑到9415区域复杂的磁场结构,研究人员预计该区域未来将发生更多的太阳爆发。“这是当前太阳活动周期最大时期中又一次令人兴奋的太阳事件系列中的一次,” NASA的欧内斯特·希尔德说,“在当前太阳活动周期最大时期。”

Kate Wong is an award-winning science writer and senior editor at 大众科学 focused on evolution, ecology, anthropology, archaeology, paleontology and animal behavior. She is fascinated by human origins, which she has covered for more than 25 years. Recently she has become obsessed with birds. Her reporting has taken her to caves in France and Croatia that Neandertals once called home, to the shores of Kenya's Lake Turkana in search of the oldest stone tools in the world, to Madagascar on an expedition to unearth ancient mammals and dinosaurs, to the icy waters of Antarctica, where humpback whales feast on krill, and on a "Big Day" race around the state of Connecticut to find as many bird species as possible in 24 hours. Kate is co-author, with Donald Johanson, of Lucy's Legacy: The Quest for Human Origins. She holds a bachelor of science degree in biological anthropology and zoology from the University of Michigan. Follow Wong on X (formerly Twitter) @katewong

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