Constraints on the cosmological density parameters and cosmic topology

Details Constraints on the cosmological density parameters and cosmic topology Constraints on the cosmological density parameters and cosmic topology

2006-05-09

arxiv.org/abs/astro-ph/0605214v1

Int.J.Mod.Phys.D16:207-217,2007

Astronomy and Astrophysics

Astrophysics

11 pages, 4 figures. To appear in Int. J. Mod. Phys. D (2006). Invited talk delivered at the 2nd International Workshop on Ast

Scientific paper

10.1142/S0218271807009942

A nontrivial topology of the spatial section of the universe is an observable, which can be probed for all locally homogeneous and isotropic universes, without any assumption on the cosmological density parameters. We discuss how one can use this observable to set constraints on the density parameters of the Universe by using a specific spatial topology along with type Ia supenovae and X-ray gas mass fraction data sets.

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