Ultrahigh-Energy Cosmic Ray Production by Turbulence in Gamma-Ray Burst Jets and Cosmogenic Neutrinos

Understand

We propose a novel model to produce ultrahigh-energy cosmic-rays (UHECRs) in gamma-ray burst jets.

• After the prompt gamma-ray emission, hydrodynamical turbulence is excited in the GRB jets at or before the afterglow phase.
• The mildly relativistic turbulence stochastically accelerates protons.
• The acceleration rate is much slower than the usual first-order shock acceleration rate, but in this case it can be energy-independent.