Magnetic helicity and cosmological magnetic field
Astrophysics
2009-11-10 v3 High Energy Physics - Phenomenology
Abstract
The magnetic helicity has paramount significance in nonlinear saturation of galactic dynamo. We argue that the magnetic helicity conservation is violated at the lepton stage in the evolution of early Universe. As a result, a cosmological magnetic field which can be a seed for the galactic dynamo obtains from the beginning a substantial magnetic helicity which has to be taken into account in the magnetic helicity balance at the later stage of galactic dynamo.
Keywords
Cite
@article{arxiv.astro-ph/0411496,
title = {Magnetic helicity and cosmological magnetic field},
author = {V. B. Semikoz and D. D. Sokoloff},
journal= {arXiv preprint arXiv:astro-ph/0411496},
year = {2009}
}
Comments
11 pages, no figures; v3: new references and new paragraphs added, discussion extended, some mistypings corrected