Expected dipole asymmetry in CMB polarization
Cosmology and Nongalactic Astrophysics
2015-05-20 v2 High Energy Physics - Phenomenology
High Energy Physics - Theory
Abstract
We explore the hemispherical asymmetry predicted in cosmic microwave background polarization when there is an asymmetry in temperature anisotropies due to primordial perturbations. We consider the cases of asymmetries due to adiabatic and isocurvature modes, and tensor perturbations. We show that the asymmetry in the TE, EE and/or BB correlations can be substantially larger than those in the TT power spectrum in certain cases. The relative asymmetry in the different cross-correlations, as well as the angular scale dependence, can in principle distinguish between different origins for the asymmetry.
Cite
@article{arxiv.1411.5312,
title = {Expected dipole asymmetry in CMB polarization},
author = {M. H. Namjoo and A. A. Abolhasani and H. Assadullahi and S. Baghram and H. Firouzjahi and D. Wands},
journal= {arXiv preprint arXiv:1411.5312},
year = {2015}
}
Comments
v2: The presentation is improved, some figures are revised. 10 pages, 18 figures