太陽向地球發出強耀斑

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圖片來源:NASA

太陽在星期二向地球方向發出了另一次強烈的耀斑,這是近期一系列太陽爆發中最強烈的一次,也是過去25年來觀測到的最強烈的爆發之一。這次爆發屬於X級耀斑,並且似乎來自太陽的活動區域9415。

太陽耀斑是太陽最強大的輻射之一,其爆發力相當於數十億兆噸TNT炸藥。它們是由磁能的突然釋放引起的。事實上,這種爆發可以將太陽粒子加速到極高的速度,接近光速。星期二的耀斑伴隨著一團帶電的磁性氣體雲,稱為日冕物質拋射,或CME。


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考慮到9415區域複雜的磁場結構,研究人員預計該區域未來將發生更多的太陽爆發。“這是當前太陽活動週期最大時期中又一次令人興奮的太陽事件系列中的一次,” NASA的歐內斯特·希爾德說,“在當前太陽活動週期最大時期。”

Kate Wong is an award-winning science writer and senior editor at 大眾科學 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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