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Astronomy · L5 · Ultra-High-Energy Cosmic Rays & the GZK Cutoff · flowchart

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by @openstemUpdated Astronomy
Proton emitted above the GZK threshold energyCollides with a CMB photonPion produced via the Delta resonanceProton loses a large fraction of its energyStill travelling through space?Observed energy pulled down near the GZK thresholdYes, over tens of megaparsecsArrives at Earth

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