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Magnetic helicity and cosmological magnetic field

descriptionPublicationkeyboard_double_arrow_right Article , Preprint , Other literature type 29 Mar 2005Embargo end date: 01 Jan 2004Publisher:EDP SciencesJournal:Astronomy & Astrophysics, volume 433, pages L53-L56 (issn: 0004-6361, eissn: 1432-0746,

Authors: Dmitry Sokoloff; V. B. Semikoz;

doi: 10.1051/0004-6361:200500094 , 10.48550/arxiv.astro-ph/0411496

arXiv: http://arxiv.org/abs/astro-ph/0411496

Magnetic helicity and cosmological magnetic field

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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.

11 pages, no figures; v3: new references and new paragraphs added, discussion extended, some mistypings corrected

Related Organizations

Spanish National Research Council
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Institute of Terrestrial Magnetism Ionosphere and Radio Wave Propagation
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INSTITUTE OF TERRESTRIAL MAGNETISM, IONOSPHERE AND RADIO WAVE PROPAGATION OF THE RUSSIAN ACADEMY OF SCIENCES
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Lomonosov Moscow State University
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University of Valencia
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Keywords

High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), the early Universe, Astrophysics (astro-ph), FOS: Physical sciences, magnetic fields, Astrophysics, Hydrodynamic and hydromagnetic problems in astronomy and astrophysics, Relativistic cosmology

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Related to Research communities

FORTHEM Alliance

NEANIAS Space Research Community