Improved CMB anisotropy constraints on primordial magnetic fields from the post-recombination ionization history

Abstract

We investigate the impact of a stochastic background of Primordial Magnetic Fields (PMF) generated before recombination on the ionization history of the Universe and on the Cosmic Microwave Background radiation (CMB). Pre-recombination PMFs are dissipated during recombination and reionization via decaying MHD turbulence and ambipolar diffusion. This modifies the local matter and electron temperatures and thus affects the ionization history and Thomson visibility function. We use this effect to constrain PMFs described by a spectrum of power-law type, extending our previous study (based on a scale-invariant spectrum) to arbitrary spectral index. We derive upper bounds on the integrated amplitude of PMFs due to the separate effect of ambipolar diffusion and MHD decaying turbulence and their combination. We show that ambipolar diffusion is relevant for $n_{\mathrm{B}}>0$ whereas for $n_{\mathrm{B}}<0$ MHD turbulence is more important. The bound marginalized over the spectral index on the integrated amplitude of PMFs with a sharp cut-off is $\sqrt{⟨B^2⟩}<0.83$ nG. We discuss the quantitative relevance of the assumptions on the damping mechanism and the comparison with previous bounds.

11 pages, 21 figures. Minor updates to match the published version

References in corpus (11)

• Planck intermediate results. XLVI. Reduction of large-scale systematic effects in HFI polarization maps and estimation of the reionization optical depth
• Planck intermediate results. XLVII. Planck constraints on reionization history
• Nonhelical inverse transfer of a decaying turbulent magnetic field
• Classes of hydrodynamic and magnetohydrodynamic turbulent decay
• Reionization - A probe for the stellar population and the physics of the early universe
• Faraday Rotation Limits on a Primordial Magnetic Field from WMAP Five-Year Data
• Scaling laws in decaying helical hydromagnetic turbulence
• Scale-invariant helical magnetic field evolution and the duration of inflation
• Searching for Primordial Magnetic Fields with CMB B-modes
• Magnetic heating across the cosmological recombination era: Results from 3D MHD simulations
• The Impact of Primordial Magnetic Fields on Future CMB Bounds on Inflationary Gravitational Waves

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