The Topology and Size of the Universe from the Cosmic Microwave Background

Details The Topology and Size of the Universe from the Cosmic Microwave Background The Topology and Size of the Universe from the Cosmic Microwave Background

2011-03-31

arxiv.org/abs/1104.0015v2

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

Additional checks, Monte-Carlo skies, and study of dipole contamination added. References added. 13 pages, 11 figures

Scientific paper

We study the possibility that the universe has compact topologies T^3, T^2 x R^1, or S^1 x R^2 using the seven-year WMAP data. The maximum likelihood 95% confidence intervals for the size L of the compact direction are 1.7 < L/L_0 < 2.1, 1.8 < L/L_0 < 2.0, 1.2 < L/L_0 < 2.1 for the three cases, respectively, where L_0=14.4 Gpc is the distance to the last scattering surface. An infinite universe is compatible with the data at 4.3 sigma. We find using a Bayesian analysis that the most probable universe has topology T^2 x R^1, with L/L_0=1.9.

Affiliated with

Also associated with

No associations

Rating

The Topology and Size of the Universe from the Cosmic Microwave Background does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The Topology and Size of the Universe from the Cosmic Microwave Background, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Topology and Size of the Universe from the Cosmic Microwave Background will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-342876