Picogauss magnetic fields in voids from ultra-high energy cosmic rays
High Energy Astrophysical Phenomena
2012-02-03 v2 Cosmology and Nongalactic Astrophysics
Abstract
We argue that ultra-high energy cosmic rays emitted by galaxy clusters result in electric currents in filaments of the large-scale structure that are sufficient to generate magnetic fields in voids of the magnitude of ~1e-12 G and the coherence length of up to tens of Mpc. These fields satisfy both the lower and upper observational bounds on magnetic fields in voids without a need of any primordial component.
Keywords
Cite
@article{arxiv.1201.4371,
title = {Picogauss magnetic fields in voids from ultra-high energy cosmic rays},
author = {M. S. Pshirkov and P. G. Tinyakov},
journal= {arXiv preprint arXiv:1201.4371},
year = {2012}
}
Comments
The paper is withdrawn because the proposed mechanism does not work. Thanks to Francesco Miniati who pointed out the loophole in the arguments