Open Questions in Cosmic-Ray Research at Ultrahigh Energies

By R. Alves Batista, J. Biteau, M. Bustamante, K. Dolag, Ralph Engel, K. Fang, K. Kampert, D. Kostunin, M. Mostafá, Kohta Murase and 6 more. Frontiers in Astronomy and Space Sciences, 2019

224 citations recorded by the source corpus.

We review open questions and prospects for progress in ultrahigh-energy cosmicray (UHECR) research, based on a series of discussions that took place during the “The High-Energy Universe: Gamma-Ray, Neutrino, and Cosmic-ray Astronomy” MIAPP workshop in 2018.Specifically, we overview open questions on the origin of the bulk of UHECRs, the UHECR mass composition, the origin of the end of the cosmic-ray spectrum, the transition from Galactic to extragalactic cosmic-rays, the effect of magnetic fields on thetrajectories of UHECRs, anisotropy expectations for specific astrophysical scenarios, hadronicinteractions, and prospects for discovering neutral particles as well as new physics at ultrahighenergies. We also briefly overview upcoming and proposed UHECR experiments and discusstheir projected science reach.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/423d0d9fb5182066bb0c52a387d17a570dfd884f

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In Nuclear and High Energy Physics

1. M. Unger
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4. K. Kampert
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Citations in the corpus

• The Muon Puzzle in cosmic-ray induced air showers and its connection to the Large Hadron Collider (2021, background): “In particular, whether the cosmic rays with the highest energies are light or heavy is of crucial importance for the design of the next generation of cosmic ray and cosmic neutrino observatories, see e.g. Aloisio et al. (2011), Alves Batista et al. (2019).”