# Determining the shape of the universe using discrete sources

@article{Gomero2003DeterminingTS, title={Determining the shape of the universe using discrete sources}, author={G. I. Gomero}, journal={Classical and Quantum Gravity}, year={2003}, volume={20}, pages={4775-4784} }

Suppose we have identified three clusters of galaxies as being topological copies of the same object. How does this information constrain the possible models for the shape of our universe? It is shown here that, if our universe has flat spatial sections, these multiple images can be accommodated within any of the six classes of compact orientable three-dimensional flat space forms. Moreover, the discovery of two more triples of multiple images in the neighbourhood of the first one would allow…

## One Citation

Topological signatures in CMB temperature anisotropy maps

- Physics
- 2005

We propose an alternative formalism to simulate CMB temperature maps in $\Lambda$CDM universes with nontrivial spatial topologies. This formalism avoids the need to explicitly compute the eigenmodes…

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