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arXiv 2108.04748astro-ph.HE
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用HAWC测量的全粒子cosmic ray能谱

The all-particle cosmic ray energy spectrum measured with HAWC

J. A. Morales-Soto, J. C. Arteaga-Velázquez

摘要:

由于最近的技术发展,新一代的宇宙射线实验已经开发出更高的灵敏度,以研究这些粒子在初级能量区间从10 TeV到1 PeV,如HAWC。由于其设计和高度,HAWC伽马射线和宇宙射线观测站可以在直接和间接宇宙射线探测器的数据之间架起一座桥梁。2017年,HAWC合作发表了关于宇宙射线总能量谱的第一个结果,其范围从10到500 TeV。这项工作通过将测量的全粒子宇宙射线能谱的能量间隔扩展到1 PeV来更新先前的结果。能谱是通过对HAWC两年的观测数据进行展开分析得到的。我们采用QGSJET-II-04模型进行能量标定和光谱重建。结果证实了数十TeV的膝状特征的存在,正如HAWC合作在2017年之前报道的那样。

英文摘要:

Thanks to recent technological development, a new generation of cosmic ray experiments have been developed with more sensitivity to study these particles in the primary energy interval from 10 TeV to 1 PeV, such as HAWC. Due to its design and high altitude, the HAWC gamma-ray and cosmic ray observatory can provide a bridge between the data from direct and indirect cosmic ray detectors. In 2017 the HAWC collaboration published its first result on the total energy spectrum of cosmic rays, which covers the range from 10 to 500 TeV. This work updates the previous result by extending the energy interval of the measured all-particle cosmic-ray energy spectrum up to 1 PeV. The energy spectrum was obtained from the analysis of two years of HAWC's data using an unfolding method. We employed the QGSJET-II-04 model for the energy calibration and the spectrum reconstruction. The results confirm the presence of a knee like feature at tens of TeV, as previously reported by the HAWC collaboration in 2017.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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