Is there a common origin for the WMAP low multipole and for the ellipticity in BOOMERanG CMB maps?

Abstract

We have measured the ellipticity of several degree scale anisotropies in the BOOMERanG maps of the Cosmic Microwave Background (CMB) at 150 GHz. The average ellipticity is around 2.6-2.7. The biases of the estimator of the ellipticity and for the noise are small in this case. Large spot elongation had been detected also for COBE-DMR maps. If this effect is due to geodesic mixing, it would indicate a non precisely zero curvature of the Universe which is among the discussed reasons of the WMAP low multipole anomaly. Both effects are related to the diameter of the Universe: the geodesics mixing through hyperbolic geometry, low multipoles through boundary conditions.This common reason can also be related with the origin of the the cosmological constant: the modes of vacuum fluctuations conditioned by the boundary conditions lead to a value of the cosmological constant being in remarkable agreement with the supernovae observations.

arXiv commentAdded: two co-authors and a comment on the possible relation of the discussed CMB properties with the origin of the observed value of the cosmological constant

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Cited by in corpus (5)

• The Uncorrelated Universe: Statistical Anisotropy and the Vanishing Angular Correlation Function in WMAP Years 1-3
• Elliptic CMB Sky
• Ellipticity in Cosmic Microwave Background as a Tracer of Large-Scale Universe
• Ellipticity of Structures in CMB Sky Maps
• Excess ellipticity of hot and cold spots in the WMAP data?