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

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 an...

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Autores principales:	Denise Boncioli, Anatoli Fedynitch, Walter Winter
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/017dc46f5b6146d6b5942976e60808da
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spelling	oai:doaj.org-article:017dc46f5b6146d6b5942976e60808da2021-12-02T11:40:42ZNuclear Physics Meets the Sources of the Ultra-High Energy Cosmic Rays10.1038/s41598-017-05120-72045-2322https://doaj.org/article/017dc46f5b6146d6b5942976e60808da2017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-05120-7https://doaj.org/toc/2045-2322Abstract 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.Denise BoncioliAnatoli FedynitchWalter WinterNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-10 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Denise Boncioli Anatoli Fedynitch Walter Winter Nuclear Physics Meets the Sources of the Ultra-High Energy Cosmic Rays
description	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.
format	article
author	Denise Boncioli Anatoli Fedynitch Walter Winter
author_facet	Denise Boncioli Anatoli Fedynitch Walter Winter
author_sort	Denise Boncioli
title	Nuclear Physics Meets the Sources of the Ultra-High Energy Cosmic Rays
title_short	Nuclear Physics Meets the Sources of the Ultra-High Energy Cosmic Rays
title_full	Nuclear Physics Meets the Sources of the Ultra-High Energy Cosmic Rays
title_fullStr	Nuclear Physics Meets the Sources of the Ultra-High Energy Cosmic Rays
title_full_unstemmed	Nuclear Physics Meets the Sources of the Ultra-High Energy Cosmic Rays
title_sort	nuclear physics meets the sources of the ultra-high energy cosmic rays
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/017dc46f5b6146d6b5942976e60808da
work_keys_str_mv	AT deniseboncioli nuclearphysicsmeetsthesourcesoftheultrahighenergycosmicrays AT anatolifedynitch nuclearphysicsmeetsthesourcesoftheultrahighenergycosmicrays AT walterwinter nuclearphysicsmeetsthesourcesoftheultrahighenergycosmicrays
_version_	1718395559955398656

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

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