Open AccessGeneration of magnetic field in the pre‐recombination era
Author(s) -
Gopal Rajesh,
Sethi Shiv K.
Publication year - 2005
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1111/j.1365-2966.2005.09442.x
Subject(s) - physics , adiabatic process , magnetic field , recombination , amplitude , scalar field , plasma , photon , quantum electrodynamics , electron , scalar (mathematics) , perturbation theory (quantum mechanics) , epoch (astronomy) , perturbation (astronomy) , astrophysics , quantum mechanics , stars , biochemistry , chemistry , geometry , mathematics , gene
We study the possibility of generating magnetic fields during the evolution of electron, proton and photon plasma in the pre‐recombination era. We show that a small magnetic field can be generated in the second order of perturbation theory for scalar modes with adiabatic initial conditions. The amplitude of the field is ≲10 −30 G at the present epoch for scales from sub‐kiloparsec to ≳100 Mpc .