A Cosmic Microwave Background Feature Consistent with a Cosmic Texture

@article{Cruz2007ACM,
  title={A Cosmic Microwave Background Feature Consistent with a Cosmic Texture},
  author={M. Cruz and Neil Turok and Patricio Vielva and Enrique Mart{\'i}nez-Gonz{\'a}lez and Michael P. Hobson},
  journal={Science},
  year={2007},
  volume={318},
  pages={1612 - 1614}
}
The Cosmic Microwave Background provides our most ancient image of the universe and our best tool for studying its early evolution. Theories of high-energy physics predict the formation of various types of topological defects in the very early universe, including cosmic texture, which would generate hot and cold spots in the Cosmic Microwave Background. We show through a Bayesian statistical analysis that the most prominent 5°-radius cold spot observed in all-sky images, which is otherwise hard… 

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References

SHOWING 1-10 OF 36 REFERENCES

COBE's constraints on the global monopole and texture theories of cosmic structure formation

We report on a calculation of large-scale anisotropy in the cosmic microwave background radiation in the global monopole and texture models for cosmic structure formation. We have evolved the

Cosmic microwave background anisotropies from scaling seeds : global defect models

We investigate the global texture model of structure formation in cosmogonies with a nonzero cosmological constant for different values of the Hubble parameter. We find that the absence of

Global texture and the microwave background.

The metric perturbation produced by a collapsing knot'' of global texture in a flat background is calculated, leading to a prediction for the microwave anisotropy pattern produced in the global-texture scenario for large-scale structure formation.

Local Voids as the Origin of Large-Angle Cosmic Microwave Background Anomalies: The Effect of a Cosmological Constant

We explore the large angular scale temperature anisotropies in the cosmic microwave background (CMB) due to homogeneous local dust-filled voids in a flat Friedmann-Robertson-Walker universe with a

WMAP constraints on inflationary models with global defects

We use the cosmic microwave background angular power spectra to place upper limits on the degree to which global defects may have aided cosmic structure formation. We explore this under the

Global texture as the origin of cosmic structure

If a unified theory possesses non-Abelian global symmetries which are spontaneously broken it gives rise to a three-dimensional defect known as texture. In an expanding universe texture obeys a

On the Viability of Bianchi Type VIIh Models with Dark Energy

We generalize the predictions for the cosmic microwave background (CMB) anisotropy patterns arising in Bianchi type VIIh universes to include a dark energy component. We consider these models in

Uncorrelated universe: Statistical anisotropy and the vanishing angular correlation function in WMAP years 1 3

The large-angle (low-l) correlations of the cosmic microwave background (CMB) as reported by the Wilkinson Microwave Anisotropy Probe (WMAP) after their first year of observations exhibited

First-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Preliminary Maps and Basic Results

We present full-sky microwave maps in five frequency bands (23-94 GHz) from the Wilkinson Microwave Anisotropy Probe (WMAP) first-year sky survey. Calibration errors are less than 0.5%, and the low

Temperature-polarization correlations from tensor fluctuations.

We study the polarization-temperature correlations on the cosmic microwave sky resulting from an initial scale-invariant spectrum of tensor (gravity wave) fluctuations, such as those which might