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      Nuclear Physics Meets the Sources of the Ultra-High Energy Cosmic Rays

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      Scientific Reports
      Nature Publishing Group UK

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          Abstract

          The determination of the injection composition of cosmic ray nuclei within astrophysical sources requires sufficiently accurate descriptions of the source physics and the propagation – apart from controlling astrophysical uncertainties. We therefore study the implications of nuclear data and models for cosmic ray astrophysics, which involves the photo-disintegration of nuclei up to iron in astrophysical environments. We demonstrate that the impact of nuclear model uncertainties is potentially larger in environments with non-thermal radiation fields than in the cosmic microwave background. We also study the impact of nuclear models on the nuclear cascade in a gamma-ray burst radiation field, simulated at a level of complexity comparable to the most precise cosmic ray propagation code. We conclude with an isotope chart describing which information is in principle necessary to describe nuclear interactions in cosmic ray sources and propagation.

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          Most cited references40

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          On Nuclear Dipole Vibrations

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            Photonuclear interactions of ultrahigh energy cosmic rays and their astrophysical consequences

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              Depth of maximum of air-shower profiles at the Pierre Auger Observatory. I. Measurements at energies above1017.8 eV

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                Author and article information

                Contributors
                denise.boncioli@desy.de
                anatoli.fedynitch@desy.de
                walter.winter@desy.de
                Journal
                Sci Rep
                Sci Rep
                Scientific Reports
                Nature Publishing Group UK (London )
                2045-2322
                7 July 2017
                7 July 2017
                2017
                : 7
                : 4882
                Affiliations
                ISNI 0000 0004 0492 0453, GRID grid.7683.a, , DESY, ; Platanenallee 6, D-15738 Zeuthen, Germany
                Author information
                http://orcid.org/0000-0001-7062-0289
                Article
                5120
                10.1038/s41598-017-05120-7
                5501817
                28687805
                95ba9948-24c7-467d-8aa7-e9de0c1f6bdf
                © The Author(s) 2017

                Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

                History
                : 23 January 2017
                : 24 May 2017
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