http://arxiv.org/abs/2208.14245
The HAWC observatory is an air-shower detector, which is designed to study both astrophysical gamma-rays in the TeV region and galactic cosmic rays in the energy interval from 1 TeV to 1 PeV. This energy regime is quite interesting for cosmic ray research, since indirect observations overlap with direct measurements, which offers the opportunity for cross calibration and studies of experimental systematic errors in both techniques. One quantity that could help for this purpose is the all-particle energy spectrum of cosmic rays. In this work, we present an update of HAWC measurements on the total cosmic-ray energy spectrum between 10 TeV and 1 PeV. The spectrum was obtained from an unfolding analysis of almost two years of HAWC’s data, which was collected from January, 2018 to December, 2019. For the energy estimation, we employed the high-energy hadronic interaction model QGSJET-II-04. The results show the presence of a knee-like structure around tens of TeVs, which was previously reported by the HAWC collaboration in 2017.
J. Morales-Soto and J. Arteaga-Velázquez
Wed, 31 Aug 22
35/86
Comments: Submission to SciPost. arXiv admin note: substantial text overlap with arXiv:2108.04748
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