Cosmogenic neutrinos challenge the cosmic-ray proton dip model

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F16%3A00548060" target="_blank" >RIV/68378271:_____/16:00548060 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.3847/0004-637X/825/2/122" target="_blank" >https://doi.org/10.3847/0004-637X/825/2/122</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3847/0004-637X/825/2/122" target="_blank" >10.3847/0004-637X/825/2/122</a>

Result language
angličtina
Original language name
Cosmogenic neutrinos challenge the cosmic-ray proton dip model
Original language description
The origin and composition of ultra-high-energy cosmic rays (UHECRs) remain a mystery. The proton dip model describes their spectral shape in the energy range above 10(9) GeV by pair production and photohadronic interactions with the cosmic microwave background. The photohadronic interactions also produce cosmogenic neutrinos peaking around 10(9) GeV. We test whether this model is still viable in light of recent UHECR spectrum measurements from the Telescope Array experiment and upper limits on the cosmogenic neutrino flux from IceCube. While two-parameter fits have been already presented, we perform a full scan of the three main physical model parameters: source redshift evolution, injected proton maximal energy, and spectral index.n
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10303 - Particles and field physics

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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