Determining the shape of the Universe using discrete sources

Preprint

6 October 2003

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.astro-ph/0305071

Abstract

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 the Universe has flat spatial sections, these multiple images can be accommodated within any of the six classes of compact orientable 3-dimensional flat space forms. Moreover, the discovery of two more triples of multiple images in the neighbourhood of the first one, would allow the determination of the topology of the Universe, and in most cases the determination of its size.

Keywords

DISCRETE SOURCES
MULTIPLE IMAGES
SOURCES SUPPOSE
USING DISCRETE
UNIVERSE USING
NEIGHBOURHOOD
ACCOMMODATED
GALAXIES

All Related Versions

Version 1, 2003-05-06, ArXiv
Version 2, 2003-10-06, ArXiv
Published version: Classical and Quantum Gravity, 20 (22), 4775.

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