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引用次数: 0

摘要

综述了超高能宇宙射线(UHECR)物理学的研究现状。在介绍了主要的实验结果并总结了可能的解释之后,我讨论了uhecr来源的观测和理论限制。我还简要地评论一下磁场的作用。结合这些限制,我认为明亮和众多的AGN类型,如fr - 1和Seyfert星系,或超新星,是最有希望的UHECR来源。最后,在结束之前,我概述了会议上提出的几个模型。我们看到宇宙中CR能量较低的部分越来越小。
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Extragalactic cosmic rays
I review the status of ultrahigh-energy cosmic ray (UHECR) physics. After introducing the main experimental results and summarizing possible intepretations, I discuss observational and theoretical constraints on the sources of UHECRs. I comment also briefly on the role of magnetic fields. Combining these constraints, I argue that luminuous and numerous AGN types as FR-I and Seyfert galaxies, or alternatively hypernovae, are the most promising UHECR sources. Finally, I sketch few of the models presented at the conference before concluding. effect at high energies, we see a smaller and smaller fraction of the Universe for lower CR energies.
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