It is argued that large scale cosmic magnetic field could be generated in the primeval plasma slightly before hydrogen recombination. Non-zero vorticity, necessary for that, might be created by the photon diffusion in the second order in the temperature fluctuations. The resulting seed fields at galactic scale would be (8-9) orders of magnitude smaller than the observed ones and with a reasonable galactic dynamo amplifying the seed fields by the factor ∼108-109 an existence of coherent magnetic fields in galaxies may be explained.
|Titolo:||GENERATION OF LARGE SCALE MAGNETIC FIELDS AT RECOMBINATION EPOCH|
BEREJIANI, ZOURAB [Writing – Original Draft Preparation] (Corresponding)
|Data di pubblicazione:||2004|
|Appare nelle tipologie:||1.1 Articolo in rivista|