A magnetized completion of the $\Lambda$CDM paradigm

Abstract

The standard $\Lambda$CDM paradigm is complemented with a magnetized contribution whose effects on the anisotropies of the Cosmic Microwave Background (CMB) are assessed by means of a dedicated numerical approach. The accuracy on the temperature and polarization correlations stems from the inclusion of the large-scale magnetic fields both at the level of the initial conditions and at the level of the Einstein-Boltzmann hierarchy which is consistently embedded in a generalized magnetohydrodynamical framework. Examples of the calculations of the temperature and polarization angular power spectra are illustrated and discussed. The reported results and the described numerical tools set the ground for a consistent inclusion of a magnetized contribution in current strategies of cosmological parameter estimation.

9 pages, 3 figures

References in corpus (5)

• Cosmology with inhomogeneous magnetic fields
• Correlated adiabatic and isocurvature CMB fluctuations in the wake of the WMAP
• Hints of Isocurvature Perturbations in the Cosmic Microwave Background?
• Semi-analytical approach to magnetized temperature autocorrelations
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Cited by in corpus (4)

• Faraday rotation, stochastic magnetic fields and CMB maps
• Generalized CMB initial conditions with pre-equality magnetic fields
• Limits on high-frequency gravitational wave background from its interplay with large scale magnetic fields
• Ohmic currents and pre-decoupling magnetism