Constraining primordial magnetic fields with CMB polarization experiments

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dc.creatorKristiansen, Jostein R.
dc.creatorFerreira, Pedro G.
dc.date2008-03-21
dc.date2008-05-23
dc.date.accessioned2026-07-07T11:33:17Z
dc.date.available2026-07-07T11:33:17Z
dc.descriptionWe calculate the effect that a primordial homogeneous magnetic field, $\B_0$, will have on the different CMB power spectra due to Faraday rotation. Concentrating on the $TB$, $EB$ and $BB$ correlations, we forecast the ability for future CMB polarization experiments to constrain $\B_0$. Our results depend on how well the foregrounds can be subtracted from the CMB maps, but we find a predicted error between $σ_{\B_0} = 4 \times 10^{-11}$Gauss (for the QUIET experiment with foregrounds perfectly subtracted) and $3 \times 10^{-10}$Gauss (with the Clover experiment with no foreground subtraction). These constraints are two orders of magnitudes better than the present limits on $\B_0$.
dc.description9 pages, 7 figures. Extended results section. Typos corrected. Corresponds to version accepted for publication in Phys. Rev. D
dc.identifierhttps://arxiv.org/abs/0803.3210
dc.identifierhttp://arxiv.org/abs/0803.3210
dc.identifierPhys.Rev.D77:123004,2008
dc.identifierdoi:10.1103/PhysRevD.77.123004
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/197841
dc.subjectAstrophysics
dc.titleConstraining primordial magnetic fields with CMB polarization experiments
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