Secondary GeV-TeV emission from ultra-high-energy cosmic rays accelerated by GRB 221009A

Understand

The origin of ultra-high-energy cosmic rays (UHECRs) remains elusive.

• Gamma-ray bursts (GRBs) are among the best candidates able to meet the stringent energy requirements needed for particle acceleration to such high energies.
• If UHECRs were accelerated by the central engine of GRB 221009A, it might be possible to detect secondary photons and neutrinos as the UHECRs travel from the source to the Earth.
• Here we attempt to interpret some of the early publicly available data connected to this burst.