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- W4386349585 abstract "Recent observations of cosmic rays (CRs) have revealed a two-component anomaly in the spectra of primary and secondary particles, as well as their ratios, prompting investigation into their common origin. In this study, we incorporate the identification of slow diffusion zones around sources as a common phenomenon into our calculations, which successfully reproduces all previously described anomalies except for the positron spectrum. Crucially, our research offers a clear physical picture of the origin of CR: while high-energy ($textrm{>200~GV}$, including the knee) particles are primarily produced by fresh accelerators and are confined to local regions, low energy ($textrm{<200~GV}$) components come from distant sources and travel through the outer diffusive zone outside of the galactic disk. This scenario can be universally applied in the galactic disk, as evidenced by ultra-high energy diffuse $rmgamma$-ray emissions detected by the AS$rmgamma$ experiment. Furthermore, our results predict that the spectrum of diffuse $rmgamma$-ray is spatial-dependent, resting with local sources, which can be tested by LHAASO experiment." @default.
- W4386349585 created "2023-09-02" @default.
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- W4386349585 date "2023-08-30" @default.
- W4386349585 modified "2023-09-28" @default.
- W4386349585 title "A common origin of multi-messenger spectral anomaly of galactic cosmic rays" @default.
- W4386349585 doi "https://doi.org/10.48550/arxiv.2308.15866" @default.
- W4386349585 hasPublicationYear "2023" @default.
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