从DAMPE到LHAASO:银河宇宙射线的刚性标度和成分变化
From DAMPE to LHAASO: Rigidity Scales and Composition Changes in Galactic Cosmic Rays
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中文总结 AI 辅助
本文回顾DAMPE和LHAASO的宇宙射线测量,探讨不同粒子能谱在TeV-PeV范围的形状变化,发现刚性相似的谱软化及高能复杂演化,以揭示银河宇宙射线源和传播机制。
中文摘要 AI 辅助
本文简要回顾了DAMPE和LHAASO最近对宇宙射线的测量,以探讨为什么不同种类的能谱在TeV-PeV能量范围内形状会发生变化。DAMPE发现,几种初级原子核在相似的磁刚性下表现出能谱软化,而DAMPE和LHAASO的质子和氦数据联合显示,在更高能量下存在更复杂的演化。通过比较这些谱特征和成分变化,我们讨论了它们可能揭示的银河宇宙射线源以及这些粒子在银河系中传播的信息。
英文摘要
This commentary briefly reviews recent measurements from DAMPE and LHAASO on cosmic rays to explore why the spectra of different species change shape across the TeV-PeV energy range. DAMPE finds that several primary nuclei show spectral softening at a similar magnetic rigidity, while the combined proton and helium data from DAMPE and LHAASO reveal a more complex evolution at higher energies. By comparing these spectral features and composition changes, we discuss what they may tell us about the sources of Galactic cosmic rays and how these particles propagate through the Galaxy.
发表机构
- School of Astronomy and Space Science, Nanjing University(南京大学天文与空间科学学院)
- State Key Laboratory of Particle Astrophysics & Experimental Physics Division & Computing Center, Institute of High Energy Physics, Chinese Academy of Sciences(中国科学院高能物理研究所粒子天体物理国家重点实验室、实验物理部及计算中心)
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