Precise measurements of the energy spectra of cosmic rays (CRs) show various kinds of features deviating from single power-laws, which give very interesting and important implications on their origin and propagation. Previous measurements from a few balloon and space experiments indicate the existence of spectral softenings around 10 TV for protons (and probably also for Helium nuclei). Very recently, the DArk Matter Particle Explorer (DAMPE) measurement about the proton spectrum clearly reveals such a softening with a high significance. Here we study the implications of these new measurements, as well as the groundbased indirect measurements, on the origin of CRs. We find that a single component of CRs fails to fit the spectral softening and the air shower experiment data simultaneously. In the framework of multiple components, we discuss two possible scenarios, the multiple source population scenario and the background plus nearby source scenario. Both scenarios give reasonable fits to the wide-band data from TeV to 100 PeV energies. Considering the anisotropy observations, the nearby source model is favored.

中文翻译：

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十次电视频谱软化对宇宙射线起源的影响

宇宙射线（CR）的能谱的精确测量显示出与单一幂律不同的各种特征，这对它们的起源和传播产生了非常有趣而重要的影响。之前通过一些气球和太空实验获得的测量结果表明，质子（可能还有氦核）在10 TV附近存在光谱软化。最近，关于质子光谱的DArk物质粒子资源管理器（DAMPE）测量清楚地揭示了这种软化具有很高的意义。在这里，我们研究了这些新测量的含义以及基于地面的间接测量对CR起源的影响。我们发现CR的单个成分无法同时拟合光谱软化和空气淋浴实验数据。在多个组件的框架中，我们讨论了两种可能的方案，即多源人口方案和背景以及附近的源方案。两种情况都适合从TeV到100 PeV能量的宽带数据。考虑到各向异性的观察，附近的源模型是有利的。