Semi-analytical approach to magnetized temperature autocorrelations

Understand

The cosmic microwave background (CMB) temperature autocorrelations, induced by a magnetized adiabatic mode of curvature inhomogeneities, are computed with semi-analytical methods.

• As suggested by the latest CMB data, a nearly scale-invariant spectrum for the adiabatic mode is consistently assumed.
• In this situation, the effects of a fully inhomogeneous magnetic field are scrutinized and constrained with particular attention to harmonics which are relevant for the region of Doppler oscillations.
• Depending on the parameters of the stochastic magnetic field a hump may replace the second peak of the angular power spectrum.