Magnetized initial conditions for CMB anisotropies

Details Magnetized initial conditions for CMB anisotropies Magnetized initial conditions for CMB anisotropies

2004-09-24

arxiv.org/abs/astro-ph/0409594v3

Phys.Rev. D70 (2004) 123507

Astronomy and Astrophysics

Astrophysics

corrected typos to match published version

Scientific paper

10.1103/PhysRevD.70.123507

This paper introduces a systematic treatment of the linear theory of scalar gravitational perturbations in the presence of a fully inhomogeneous magnetic field. The analysis is conducted both in the synchronous and in the conformally Newtonian gauges. The cosmological plasma is assumed to be composed of cold dark mattter, baryons, photons, neutrinos. The problem of super-horizon initial conditions for the fluid variables of the various species and for the coupled system of Boltzmann-Einstein equations is discussed in the presence of an inhomogeneous magnetic field. The tight coupling approximation for the Boltzmann hierarchy is extended to the case where gravitating magnetic fields are included.

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