Generation of magnetic field in the pre-recombination era

Generation of magnetic field in the pre-recombination era

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 ampl...

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Veröffentlicht in:Monthly notices of the Royal Astronomical Society 2005-10, Vol.363 (2), p.521-528
Hauptverfasser: Gopal, Rajesh, Sethi, Shiv K.
Format: Artikel
Sprache:eng
Schlagworte:
Astrophysics
cosmology: theory
Magnetic fields
MHD
Plasma
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Zusammenfassung: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.
ISSN:0035-8711
1365-2966
DOI:10.1111/j.1365-2966.2005.09442.x