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arxiv: astro-ph/9912081 · v2 · pith:ZMMPWLR4new · submitted 1999-12-03 · 🌌 astro-ph

Unmasking the tail of the cosmic ray spectrum

classification 🌌 astro-ph
keywords spectrumcosmicabovealbeitanalysedappearancedata-basedetail
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A re-examination of the energy cosmic ray spectrum above $10^{20}$ eV is presented. The overall data-base provides evidence, albeit still statistically limited, that non-nucleon primaries could be present at the end of the spectrum. In particular, the possible appearance of superheavy nuclei (seldom discussed in the literature) is analysed in detail.

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