PeV cosmic rays: A window on the leptonic era?

Richard Wigmans

Research output: Contribution to journalArticlepeer-review

39 Scopus citations


It is shown that a variety of characteristic features of the high-energy hadronic cosmic-ray spectra, in particular the abrupt changes in the spectral index that occur around 3 and 300 PeV, as well as the corresponding changes in elemental composition that are evident from kinks in the 〈Xmax〉 distribution, can be explained in great detail from interactions with relic Big Bang antineutrinos, provided that the latter have a rest mass of ∼0.5 eV/c2.

Original languageEnglish
Pages (from-to)379-392
Number of pages14
JournalAstroparticle Physics
Issue number3
StatePublished - Jun 2003


  • Cosmic rays
  • Knee
  • Neutrino mass
  • Relic neutrinos


Dive into the research topics of 'PeV cosmic rays: A window on the leptonic era?'. Together they form a unique fingerprint.

Cite this