Cosmic magnetic fields from velocity perturbations in the early universe

2003/10/21 by Gerold Betschart, Peter K. S. Dunsby, Peter K S Dunsby +1 · 3 citations
Physics and Astronomy · #COSMIC cancer database #Cosmic microwave background #Cosmic ray #Cosmology and Gravitation Theories #Covariant transformation #Dark Matter and Cosmic Phenomena #Dynamo #Magnetic field #Perturbation (astronomy) #Pulsars and Gravitational Waves Research #Universe #gr-qc

paper · pdf · doi:10.1088/0264-9381/21/8/014

published as Class.Quant.Grav.21:2115-2126,2004 · 11 pages, 1 figure, IOP style, minor changes and typos corrected

arxiv created 2003/10/21 · openalex publication_date 2004/03/23 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06

Abstract

We show, using a covariant and gauge-invariant charged multifluid perturbation scheme, that velocity perturbations of the matter-dominated dust Friedmann–Lemaître–Robertson–Walker model can lead to the generation of cosmic magnetic fields. Moreover, using cosmic microwave background constraints, it is argued that these fields can reach strengths of about 10 −28 G at the time the dynamo mechanism sets in, making them plausible seed field candidates.

Citations

• Primordial magnetic fields induced by cosmological particle creation
• A gauge-invariant analysis of magnetic fields in general-relativistic cosmology
• First‐Year Wilkinson Microwave Anisotropy Probe ( WMAP ) Observations: Preliminary Maps and Basic Results
• A flat Universe from high-resolution maps of the cosmic microwave background radiation
• Primordial magnetic fields from inflation?
• Noncommutativity in Space and Primordial Magnetic Field

Cited by

• Scalar perturbations in two-temperature cosmological plasmas
• Superhorizon magnetic fields
• Effect of primordial magnetic field on seeds for large scale structure