Strongly Interacting Astrophysical Neutrinos
Astrophysics
2009-11-13 v1
Abstract
The origin and chemical composition of ultra high energy cosmic rays is still an open question in astroparticle physics. The observed large-scale isotropy and also direct composition measurements can be interpreted as an extragalactic proton dominance above the ankle at about 10^10 GeV. Photopion production of extragalactic protons in the cosmic microwave background predicts a cutoff at about 5x10^10 GeV in conflict with excesses reported by some experiments. In this report we will outline a recent statistical analysis (astro-ph/0506698) of cosmic ray data using strongly interacting neutrinos as primaries for these excesses.
Keywords
Cite
@article{arxiv.astro-ph/0511483,
title = {Strongly Interacting Astrophysical Neutrinos},
author = {Markus Ahlers},
journal= {arXiv preprint arXiv:astro-ph/0511483},
year = {2009}
}
Comments
3 pages, 2 figures, to appear in the proceedings of the Erice School/Workshop on Neutrinos, 2005