On the relation between the astrophysical neutrino fluxes and the cosmic ray fluxes

Some generalizations of the relation between high-energy astrophysical neutrino arid cosmic ray fluxes are obtained, taking into account present results on the cosmic ray spectrum and composition as well as a more realistic modeling of the Galactic and extragalactic cosmic ray components down to PeV energies. It is found that the level of neutrino fluxes measured by IceCube can be consistent with sources that are thin to escaping protons. This could also make it easier for heavier nuclei to be emitted from the sources without suffering excessive disintegration processes.

Automated summary

By considering the cosmic ray spectrum and composition, as well as a more realistic modeling of Galactic and extragalactic cosmic ray components down to PeV energies, the study found that the neutrino fluxes measured by IceCube could be consistent with sources characterized by thin escaping protons, potentially allowing for the emission of heavier nuclei without excessive disintegration processes.