jianjie

中国天文学会学术期刊

天文学进展

PROGRESS IN ASTRONOMY

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极高能宇宙线的研究进展

吴飞　　徐仁新
(北京大学物理学院　北京　100871)

摘要

极高能宇宙线是能量高于»10¹⁹ eV的带电或中性的宇宙线粒子。其成分和形成机制的研究是宇宙线物理的重要内容之一，对高能天体物理、粒子物理和宇宙学等相关学科具有重要意义，而且很可能是揭示某些新的基本物理规律的突破点。围绕GZK疑难，重点综述了极高能宇宙线的观测和理论研究现状，对其研究前景作了展望。

Ultra High Energy Cosmic Rays

Wu Fei Xu Renxin
(School of Physics, Peking University, Beijing 100871)

Abstract

The recent achievments of ultra-high energy cosmic ray (UHECR) are briefly reviewed. UHECRs are particles with energy above »10¹⁹ eV, which may play an important role in modern high-energy physics, particle physics and cosmology. However, the origin and the composition of UHECRs are still enigmas. Beginning with the GZK cutoff, we present the observations and theoretical models for the UHECR study. It is a common point that these energetic particles may become a window to new physics.