Transfer matrices for magnetized CMB anisotropies

Abstract

Large-scale magnetic fields can affect scalar cosmological perturbations whose evolution is described in the conformally Newtonian gauge and within the tight coupling approximation. The magnetized curvature perturbations present after matter radiation equality (and prior to decoupling) are computed in terms of an appropriate transfer matrix allowing a general estimate of the Sachs-Wolfe plateau. From the observation that CMB initial conditions should be (predominantly) adiabatic, the contribution of the magnetic field intensity can be constrained.

9 pages

References in corpus (2)

• Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
• Observable primordial vector modes

Cited by in corpus (10)

• Cosmology with inhomogeneous magnetic fields
• Inflation-Produced Magnetic Fields in R^n F^2 and I F^2 models
• Faraday rotation, stochastic magnetic fields and CMB maps
• CMB anisotropies due to cosmological magnetosonic waves
• Tight coupling expansion and fully inhomogeneous magnetic fields
• Semi-analytical approach to magnetized temperature autocorrelations
• Generalized CMB initial conditions with pre-equality magnetic fields
• A magnetized completion of the $\Lambda$CDM paradigm
• Large-scale magnetic fields, curvature fluctuations and the thermal history of the Universe
• Why CMB physics?