Other Possible Sources of The Particles
Other possible sources of the UHECR are:
- radio lobes of powerful radio galaxies
- intergalactic shocks created during the epoch of galaxy formation
- hypernovae
- gamma-ray bursts
- decay products of supermassive particles from topological defects, left over from phase transitions in the early universe
- Particles undergoing the Penrose effect.
Read more about this topic: Ultra-high-energy Cosmic Ray
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