1. Ellipticity in cosmic microwave background as a tracer of large-scale universe
- Author
-
A. L. Kashin, Carlo Luciano Bianco, G. Yegorian, Vahe Gurzadyan, and H. Kuloghlian
- Subjects
Physics ,Age of the universe ,media_common.quotation_subject ,Cosmic microwave background ,Astrophysics (astro-ph) ,General Physics and Astronomy ,Spectral density ,FOS: Physical sciences ,Astrophysics ,General Relativity and Quantum Cosmology (gr-qc) ,Astrophysics::Cosmology and Extragalactic Astrophysics ,CMB cold spot ,Universe ,Space Physics (physics.space-ph) ,General Relativity and Quantum Cosmology ,Physics - Space Physics ,Dark energy ,Anisotropy ,Microwave ,media_common - Abstract
Wilkinson Microwave Anisotropy Probe (WMAP) 3-year data confirm the ellipticity of anisotropies of Cosmic Microwave Background (CMB) maps, found previously for Boomerang and WMAP 1-year high sensitivity maps. The low noise level of the WMAP latter data enable also to show that, the ellipticity is a property not described by the conventional cosmological model fitting the power spectrum of CMB. As a large scale anomaly, the ellipticity characteristics are consistent with the effect of geodesics mixing occurring in hyperbolic Universe. Its relation to other large scale effects, i.e. to suppressed low multipoles, as well as to dark energy if the latter is due to vacuum fluctuations, is then an arising issue., to appear in Phys. Lett. A
- Published
- 2007