论文标题
质子的宇宙射线光谱以及HAWC数据的6 teV和158 TEV之间的氦气核
Cosmic ray spectrum of protons plus helium nuclei between 6 TeV and 158 TeV from HAWC data
论文作者
论文摘要
据报道，据报道，宇宙射线中光元件的差异能谱的高统计量，尤其是原发性H和Nuclei的测量值。该频谱在能量范围内从$ 6 $到$ 158 $ TEV范围内呈现。数据是在2015年6月至2019年6月之间使用高海拔水Cherenkov（HAWC）天文台收集的。该分析是基于贝叶斯展开程序的，该程序适用于垂直HAWC数据的子样本，该程序富集于Light Noteclei引起的事件的82美元\％。为了实现质量分离，通过Corsika/QGSJET-II-04仿真的预测来指导空气淋浴数据的横向年龄。测得的频谱与损坏的幂律光谱一致，并显示出膝盖般的特征，约为$ e = 24.0^{+3.6} _ { - 3.1} $ tev，频谱索引$γ= -2.51 \ pm 0.02 $ 0.02 $，并在休息前，$γ= -2.83 \ pm pm 0.02 $ 0.02 $。该功能具有$ 4.1 \，σ$的统计意义。在系统的不确定性中，光谱中断的重要性为$ 0.8 \，σ$。
A measurement with high statistics of the differential energy spectrum of light elements in cosmic rays, in particular, of primary H plus He nuclei, is reported. The spectrum is presented in the energy range from $6$ to $158$ TeV per nucleus. Data was collected with the High Altitude Water Cherenkov (HAWC) Observatory between June 2015 and June 2019. The analysis was based on a Bayesian unfolding procedure, which was applied on a subsample of vertical HAWC data that was enriched to $82\%$ of events induced by light nuclei. To achieve the mass separation, a cut on the lateral age of air shower data was set guided by predictions of CORSIKA/QGSJET-II-04 simulations. The measured spectrum is consistent with a broken power-law spectrum and shows a kneelike feature at around $E = 24.0^{+3.6}_{-3.1} $ TeV, with a spectral index $γ= -2.51 \pm 0.02$ before the break and with $γ= -2.83 \pm 0.02$ above it. The feature has a statistical significance of $4.1 \, σ$. Within systematic uncertainties, the significance of the spectral break is $0.8 \, σ$.
