日媒11月24日报道,日本大坂公立大学参与的国际研究团队观测到一种带有巨大能量的超高能宇宙射线,并把构成射线的粒子命名为「天照大神粒子」(Amaterasu),理论上1克粒子的能量已足以摧毁地球。
国际研究团队由来自8个国家的科学家组成,包括日本、美国、俄罗斯等,研究结果11月24日发表在美国《科学》(Science)杂志。
综合日本放送协会(NHK)、日经新闻报道,团队自2008年开始,在美国犹他州沙漠设置507台探测器展开观测,并定期分析数据,至2021年5月,他们观测到一种超高能宇宙射线,能量达到244艾电子伏特,是人类历来探测到能量第二高的宇宙射线,仅次于1991年发现、达到320艾电子伏特的「天呀粒子」(Oh-My-God
particle)宇宙射线。
日本放送协会指,理论上1克粒子的能量已足以摧毁地球。
大坂公立大学副教授藤井俊博表示,会争取查明新发现宇宙射线的起源。团队试图追溯粒子的轨迹,但至今未能查明其来源,从粒子来源方向看,并不存在已知天体。团队认为粒子可能是由一颗大质量星体爆炸而产生。
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