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Magnetic fields in the early Universe

Published online by Cambridge University Press:  01 November 2008

Eduardo Battaner  and
Estrella Florido
Eduardo Battaner
Affiliation:
Departamento de Física Teórica y del Cosmos, Universidad de Granada Avenida Fuentenueva s/n, 18071 Granada Institute Carlos I for Theoretical and Computational Physics. Universidad de Granada email: battaner@ugr.es, estrella@ugr.es
Estrella Florido
Affiliation:
Departamento de Física Teórica y del Cosmos, Universidad de Granada Avenida Fuentenueva s/n, 18071 Granada Institute Carlos I for Theoretical and Computational Physics. Universidad de Granada email: battaner@ugr.es, estrella@ugr.es
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Abstract

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There is increasing evidence that intense magnetic fields exist at large redshifts. They could arise after galaxy formation or in very early processes, such as inflation or cosmological phase transitions, or both. Early co-moving magnetic strengths in the range 1-10 nG could be present at recombination. The possibilities to detect them in future CMB experiments are discussed, mainly considering their impact in the anisotropy spectra as a result of Faraday rotation and Alfven waves. Magnetic fields this magnitude could also have a non-negligible influence in determining the filamentary large scale structure of the Universe.

Keywords

Magnetic fields – cosmology – cosmic microwave background – large-scale structure of universe

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