arXiv:1112.4797 [astro-ph.CO]AbstractReferencesReviewsResources
Effects of helical magnetic fields on the cosmic microwave background
Published 2011-12-20Version 1
A complete numerical calculation of the temperature anisotropies and polarization of the cosmic microwave background (CMB) in the presence of a stochastic helical magnetic field is presented which includes the contributions due to scalar, vector and tensor modes. The correlation functions of the magnetic field contributions are calculated numerically including a Gaussian window function to effectively cut off the magnetic field spectrum due to damping. Apart from parity-even correlations the helical nature of the magnetic field induces parity-odd correlations between the E- and B-mode of polarization (EB) as well as between temperature (T) and the polarization B-mode (TB).
Comments: 22 pages, 14 figures
Categories: astro-ph.CO
Keywords: cosmic microwave background, magnetic field induces parity-odd correlations, stochastic helical magnetic field, magnetic field contributions, polarization
Tags: journal article
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