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Cosmological Magnetic Fields: Their Generation, Evolution and Observation

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      Abstract

      We review the possible mechanisms for the generation of cosmological magnetic fields, discuss their evolution in an expanding Universe filled with the cosmic plasma and provide a critical review of the literature on the subject. We put special emphasis on the prospects for observational tests of the proposed cosmological magnetogenesis scenarios using radio and gamma-ray astronomy and ultra high energy cosmic rays. We argue that primordial magnetic fields are observationally testable. They lead to magnetic fields in the intergalactic medium with magnetic field strength and correlation length in a well defined range. We also state the unsolved questions in this fascinating open problem of cosmology and propose future observations to address them.

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      End to the Cosmic-Ray Spectrum?

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        Extragalactic magnetic fields

         P Kronberg (1994)
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          Magnetic fields from cosmological phase transitions

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            Author and article information

            Journal
            28 March 2013
            2013-05-07
            1303.7121
            10.1007/s00159-013-0062-7

            http://arxiv.org/licenses/nonexclusive-distrib/1.0/

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            to appear in Astronomy & Astrophysics Review
            astro-ph.CO astro-ph.HE

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