Cosmological magnetic fields: their generation,evolution and observation |
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| Authors: | Ruth?Durrer Email author" target="_blank">Andrii?NeronovEmail author |
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| Institution: | 1.Département de Physique Théorique and Center for Astroparticle Physics,Université de Genève,Genève,Switzerland;2.ISDC Data Centre for Astrophysics, Observatoire de Genève and Center for Astroparticle Physics,Université de Genève,Versoix,Switzerland |
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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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