论文标题
开始跨越宇宙的旅程：发现外部中微子工厂
Beginning a journey across the universe: the discovery of extragalactic neutrino factories
论文作者
论文摘要
中微子是宇宙中最难以捉摸的颗粒，能够几乎不受阻碍地行进。尽管收集了大量数据，但长期存在尚未解决的问题仍然是高能中微子与起源于它们的天体物理来源的关联。在候选中微子的候选来源中，有一类由超级质量黑洞提供动力的一类外层次来源，这些来源供应高度相对论的喷气机，指向地球。先前的研究似乎是有争议的，几项努力声称高能中微子事件与单个小礼物之间存在暂定性联系，而其他人则质疑这种关系。在这项工作中，我们表明，在前所未有的信心水平，即6 x 10^{ - 7}的机会概率（即偶然性概率）上，大部分与高能天体中微子明确相关。我们的统计分析提供了观察性的证据，即大部分是天体物理中微子工厂，因此是乳清外宇宙射线加速器。
Neutrinos are the most elusive particles in the Universe, capable of traveling nearly unimpeded across it. Despite the vast amount of data collected, a long standing and unsolved issue is still the association of high-energy neutrinos with the astrophysical sources that originate them. Amongst the candidate sources of neutrinos there are blazars, a class of extragalactic sources powered by supermassive black holes that feed highly relativistic jets, pointed towards the Earth. Previous studies appear controversial, with several efforts claiming a tentative link between high-energy neutrino events and individual blazars, and others putting into question such relation. In this work we show that blazars are unambiguously associated with high-energy astrophysical neutrinos at unprecedented level of confidence, i.e. chance probability of 6 x 10^{-7}. Our statistical analysis provides the observational evidence that blazars are astrophysical neutrino factories and hence, extragalactic cosmic-ray accelerators.
