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Magnetogenesis at Cosmic Dawn

Published online by Cambridge University Press:  12 October 2016

J-B. Durrive  and
M. Langer
J-B. Durrive
Affiliation:
Institut d'Astrophysique Spatiale, Bâtiment 121, Univ. Paris-Sud, UMR8617, Orsay, F-91405 CNRS, Orsay, F-91405. email: [email protected]
M. Langer
Affiliation:
Institut d'Astrophysique Spatiale, Bâtiment 121, Univ. Paris-Sud, UMR8617, Orsay, F-91405 CNRS, Orsay, F-91405. email: [email protected]
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Abstract

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We present a mechanism for generating cosmological magnetic fields during the Epoch of Reionization, based on the photoionization of intergalactic hydrogen. A general formula is presented, together with an example numerical application which yields magnetic field strengths between 10−23 to 10−19 G on intersource scales. This mechanism, which operates all along Reionization around any ionizing source, participates to the premagnetization of the whole intergalactic medium. Also, the spatial configuration of these fields may help discriminate them from those produced by other mechanisms in future observations.

Keywords

Cosmology:theorymagnetic fieldslarge-scale structure of universe
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 11 , Symposium S308: The Zeldovich Universe: Genesis and Growth of the Cosmic Web , June 2014 , pp. 378 - 379
Copyright
Copyright © International Astronomical Union 2016 

References

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