Polarization-Temperature Correlation from a Primordial Magnetic Field
arXiv:astro-ph/9707115 · doi:10.1103/PhysRevD.56.R7493
Abstract
We propose a new method for constraining a primordial homogeneous magnetic field with the cosmic microwave background. Such a field will induce an observable parity odd cross correlation between the polarization anisotropy and the temperature anisotropy by Faraday rotation. We analyze the necessary experimental features to match, and improve, current constraints of such a field by measuring this correlation.
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