Parameter dependence of magnetized CMB observables

Abstract

Pre-decoupling magnetic fields affect the scalar modes of the geometry and produce observable effects which can be constrained also through the use of current (as opposed to forthcoming) data stemming from the Cosmic Microwave Background observations. The dependence of the temperature and polarization angular power spectra upon the parameters of an ambient magnetic field is encoded in the scaling properties of a set of basic integrals whose derivation is simplified in the limit of small angular scales. The magnetically-induced distortions patterns of the relevant observables can be computed analytically by employing scaling considerations which are corroborated by numerical results.

48 pages, 11 figures; corrected minor typos; discussions added; to appear in Physical Review

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Cited by in corpus (29)

• Cosmological Magnetic Fields: Their Generation, Evolution and Observation
• Sensitivity of gamma-ray telescopes for detection of magnetic fields in intergalactic medium
• Generation of circular polarization of the CMB
• Cosmological magnetic field survival
• Polarization bispectrum for measuring primordial magnetic fields
• The V-mode polarization of the Cosmic Microwave Background
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• Fluctuations of inflationary magnetogenesis
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• Thermal Sunyaev-Zel'dovich effect in the intergalactic medium with primordial magnetic fields
• Circular dichroism, magnetic knots and the spectropolarimetry of the Cosmic Microwave Background
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• Reynolds numbers in the early Universe
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