高能粒子撞击地球
(原标题: Energetic Particle Strikes the Earth)
2023-12-05
浏览次数: 73
它是迄今为止已知的撞击地球的能量最大的粒子之一——但它是从哪里来的？这种粒子和所有撞击地球大气层的宇宙射线一样，被称为天照神（Amaterasu），在空气中形成电子、质子和其他基本粒子的阵雨，喷向下面的地球。在这幅特色插图中，一场宇宙射线空气阵雨袭击了美国犹他州的望远镜阵列，该望远镜阵列在2021年5月记录了天照大神事件。宇宙射线空气阵雨很常见，你可能自己就在粒子喷雾中，尽管你可能没有注意到。这种高能粒子（很可能是原子核）的起源在两个方面仍然是个谜。首先，我们不知道单个粒子或原子核是如何获得如此大的能量的，其次，试图追踪粒子的起源并没有显示出任何可能的潜在来源。开放科学：浏览天体物理学源代码库中的3200多个代码
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It was one of the most energetic particles ever known to strike the Earth -- but where did it come from? Dubbed Amaterasu after the Shinto sun goddess, this particle, as do all cosmic rays that strike the Earth's atmosphere, caused an air shower of electrons, protons, and other elementary particles to spray down onto the Earth below. In the featured illustration, a cosmic ray air shower is pictured striking the Telescope Array in Utah, USA, which recorded the Amaterasu event in 2021 May. Cosmic ray air showers are common enough that you likely have been in a particle spray yourself, although you likely wouldn't have noticed. The origin of this energetic particle, likely the nucleus of an atom, remains a mystery in two ways. First, it is not known how any single particle or atomic nucleus can practically acquire so much energy, and second, attempts to trace the particle back to where it originated did not indicate any likely potential source. Open Science: Browse 3,200+ codes in the Astrophysics Source Code Library