UHECRs from the Radio Lobes of AGNs
Astrophysics
2008-10-07 v2
Abstract
We report a stochastic mechanism of particle acceleration from first principles in an environment having properties like those of Radio Lobes in AGNs. We show that energies eV are reached in years for protons. Our results reopen the question regarding the nature of the high-energy cutoff in the observed spectrum: whether it is due solely to propagation effects, or whether it is also affected by the maximum energy permitted by the acceleration process itself.
Keywords
Cite
@article{arxiv.0809.3940,
title = {UHECRs from the Radio Lobes of AGNs},
author = {F. Fraschetti and F. Melia},
journal= {arXiv preprint arXiv:0809.3940},
year = {2008}
}
Comments
4 pages, 2 figures; talk given by F.F. at Conference "Challenges in Particle Astrophysics" (XXth Rencontres de Blois 2008)