2024
DOI: 10.3847/1538-4357/ad2352
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A Detectable Ultra-high-energy Cosmic-Ray Outburst from GRB 221009A

Hao-Ning He,
B. Theodore Zhang,
Yi-Zhong Fan

Abstract: Gamma-ray bursts (GRBs) have been proposed as one of the promising sources of ultra-high-energy cosmic rays (UHECRs), but observational evidence is still lacking. The nearby brightest of all time GRB 221009A, a once in 1000 yr event, is able to accelerate protons to ∼103 EeV, and then generate extremly energetic neutrons via the photomeson production interaction. Protons arriving at the Milky Way are dominated by neutron-decay-induced protons. The intergalactic magnetic fields would not yield a sizable delay o… Show more

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