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Simulating Ultra-High Energy Nuclei Propagation with CRPropa

机译:用CRPropa模拟超高能核的传播

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Experimental data on the properties of Ultra-High Energy Cosmic Rays (UHECRs) above 1018 eV are opento controversial interpretations. Data on the elongation rate and its fluctuations, taken by the Pierre Auger Observatory,seem to indicate the possible presence of heavy nuclei in the UHECR spectrum. On the other hand, data on UHECRarrival directions seem to favor a lighter composition. It is therefore important to have tools to compute the propagationof UHECR nuclei in the InterGalactic Medium (IGM), that may help clarify these issues. To this aim, we extended thepublic code CRPropa to propagate heavy nuclei, taking into account all the relevant interactions they may undergo in theIGM and also their deflections due to intergalactic magnetic fields. We will show the first results of the new code, bothon primary UHECR spectra and deflections and on the spectra of the secondary gamma-rays and cosmogenic neutrinos.
机译:高于1018 eV的超高能宇宙射线(UHECR)特性的实验数据有争议。皮埃尔·俄格天文台获得的有关伸长率及其波动的数据似乎表明,UHECR光谱中可能存在重核。另一方面,关于UHECR到达方向的数据似乎倾向于较轻的构成。因此,拥有用于计算UHECR核在星际介质(IGM)中传播的工具很重要,这可能有助于弄清这些问题。为此,我们考虑到它们在IGM中可能经历的所有相关相互作用以及由于星际磁场引起的偏转,将公共代码CRPropa扩展为传播重核。我们将在新的UHECR光谱和偏转以及次生伽马射线和宇宙产生的中微子的光谱上展示新代码的第一个结果。

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