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Extending the WMAP Bound on the Size of the Universe

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arxiv astro-ph/0604616 v1 pith:E2L3DGGR submitted 2006-04-28 astro-ph gr-qc

classification astro-phgr-qc
keywords universeboundwmapcirclescombinationfilteringlowermatching
verification ladder T0 review T1 audit T2 compute T3 formal
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Clues to the shape of our Universe can be found by searching the CMB for matching circles of temperature patterns. A full sky search of the CMB, mapped extremely accurately by NASA's WMAP satellite, returned no detection of such matching circles and placed a lower bound on the size of the Universe at 24 Gpc. This lower bound can be extended by optimally filtering the WMAP power spectrum. More stringent bounds can be placed on specific candidate topologies by using a a combination statistic. We use optimal filtering and the combination statistic to rule out the infamous "soccer ball universe'' model.

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Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Gravitational waves and cosmic boundary

    gr-qc 2024-11 conditional novelty 6.0 of 10

    If the cosmos has a reflective boundary beyond redshift 15, gravitational waves from repeated black hole mergers could reveal it, with a TianQin+LISA network best at fixing the boundary's orientation.

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