A comprehensive review concluding that UHECRs are likely heavy nuclei and that accretion shocks and jets are the most promising sources, with no new experimental results.
Tidal disruption jets as the source of Ultra-High Energy Cosmic Rays
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abstract
Observations of the spectacular, blazar-like tidal disruption event (TDE) candidates Swift J1644+57 and J2058+05 show that the conditions required for accelerating protons to 10^{20} eV appear to be realized in the outer jet, and possibly in the inner jet as well. Direct and indirect estimates of the rate of jetted-TDEs, and of the energy they inject, are compatible with the observed flux of ultra-high energy cosmic rays (UHECRs) and the abundance of presently contributing sources. Thus TDE-jets can be a major source of UHECRs, even compabile with a pure proton composition.
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Ultra High Energy Cosmic Rays
A comprehensive review concluding that UHECRs are likely heavy nuclei and that accretion shocks and jets are the most promising sources, with no new experimental results.