Astronomy and Astrophysics – Astrophysics
Scientific paper
2005-05-09
Phys.Rev. D72 (2005) 043526
Astronomy and Astrophysics
Astrophysics
13 pages
Scientific paper
10.1103/PhysRevD.72.043526
Nonlinear gravitational effects of large-scale inhomogeneities on Cosmic Microwave Background (CMB) anisotropies are studied. based on the relativistic second-order theory of perturbations in nonzero-Lambda flat cosmological models, which has been analytically derived by the present author, and on the second-order formula of CMB anisotropies derived by Mollerach and Matarrese. In this paper we derive the components of the CMB anisotropy power spectra in the range of l = 1 -22 which are caused by asymmetric local inhomogeneities on scales of 300 Mpc. Using our results it is found that there is a possibility to explain the small north-south asymmetry of CMB anisotropies which has recently been observed.
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