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Probing cosmic topology using CMB anisotropy

1998

4 pages

Part of Proceedings, 33rd Rencontres de Moriond fundamental parameters in cosmology : Les Arcs, France, Jan 17-24, 1998, 131-134

Contribution to:

33rd Rencontres de Moriond: Fundamental Parameters in Cosmology, 131-134

Published: 1998

e-Print:

astro-ph/9804042 [astro-ph]

Report number:

CITA-98-11

View in:

ADS Abstract Service

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Abstract: (arXiv)

The measurements of CMB anisotropy have opened up a window for probing the global topology of the universe on length scales comparable to and beyond the Hubble radius. We have developed a new method for calculating the CMB anisotropy in models with nontrivial topology and apply it to open universe models with compact spatial topology. We conduct a Bayesian probability analysis for a selection of models which confronts the theoretical pixel-pixel temperature correlation function with the COBE-DMR data. Our results demonstrate that strong constraints on compactness arise: if the universe is small compared to the `horizon' size, correlations appear in the maps that are irreconcilable with the observations.

References(12)

Figures(0)

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