Weak Lensing Effect on CMB in the Presence of a Dipole Anisotropy

Abstract

We investigate weak lensing effect on cosmic microwave background (CMB) in the presence of dipole anisotropy. The approach of flat-sky approximation is considered. We determine the functions ${\sigma }_0^2$ and ${\sigma }_2^2$ that appear in expressions of the lensed CMB power spectrum in the presence of a dipole anisotropy. We determine the correction to B-mode power spectrum which is found to be appreciable at low multipoles ($l$). However, the temperature and E-mode power spectrum are not altered significantly.

9 pages

References in corpus (1)

• A Hemispherical Power Asymmetry from Inflation