Can COBE see the shape of the universe?

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dc.creatorCornish, Neil
dc.creatorSpergel, David
dc.creatorStarkman, Glenn
dc.date1997-08-25
dc.date1998-04-07
dc.date.accessioned2026-07-07T11:34:06Z
dc.date.available2026-07-07T11:34:06Z
dc.descriptionIn recent years, the large angle COBE--DMR data have been used to place constraints on the size and shape of certain topologically compact models of the universe. Here we show that this approach does not work for generic compact models. In particular, we show that compact hyperbolic models do not suffer the same loss of large angle power seen in flat or spherical models. This follows from applying a topological theorem to show that generic hyperbolic three manifolds support long wavelength fluctuations, and by taking into account the dominant role played by the integrated Sachs-Wolfe effect in a hyperbolic universe.
dc.description16 Pages, 5 Figures. Version published in Phys. Rev. D
dc.identifierhttps://arxiv.org/abs/astro-ph/9708225
dc.identifierhttp://arxiv.org/abs/astro-ph/9708225
dc.identifierPhys.Rev.D57:5982-5996,1998
dc.identifierdoi:10.1103/PhysRevD.57.5982
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/198129
dc.subjectAstrophysics
dc.subjectGeneral Relativity and Quantum Cosmology
dc.titleCan COBE see the shape of the universe?
dc.typetext

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