摘要
由于天体粒子物理涉及的研究领域太宽,本文拟以宇宙线总的能谱特征为线索,分段介绍各能区的研究前沿,总结有关宇宙线的起源、传播和成分的理论模型和相应的观测实验进展,并简要介绍相关的高能领域,例如γ暴(GRB),中微子,暗物质,超对称(SUSY),大统一理论(GUT)。这些理论在某种程度上暗示着极高能宇宙线的产生机制,并可能意味着需要新的超出标准粒子物理模型的理论来解释GZK截断(GZK Cutoff)的疑难问题。对高能天体物理的研究可以拓宽人类对早期宇宙的认识,为新物理理论模型提供检验的证据,为人类认识自然提供了另一扇窗口。
Because the scope of the research in astropatrticle physics is too extensive,in this review we only follow the clue of total energy spectrum of cosmic Rays (CRs) and discuss the important progress made in recent years at different energy range, respectively.In addition,we summarize the theoretical models and experimental developments about the CR's origin. chemical composition and propagation.In the article we also give a short introduction of the related high-energy phenomenon,for example,the γ Burst(GRB), neutrino,Dark Matter,Supersymmetry (SUSY),Grand Unification Theory (GUT)etc..These theories would imply some mechanism of cosmic ray production to some extent and hint that the GZK cut-off puzzle may be explained by new physics beyond the Standard Model.The probe to Cosmic Ray astrophysics could enlarge the knowledge of the early universe and provide the proof of testing exotic physical laws,and present an another window to realize the nature.
出处
《物理学进展》
CSCD
北大核心
2004年第3期300-324,共25页
Progress In Physics
基金
国家自然科学基金项目 (1 0 2 3 3 0 50 )
