Inhomogeneities and the Intergalactic Distance-Redshift Relation

Details Inhomogeneities and the Intergalactic Distance-Redshift Relation Inhomogeneities and the Intergalactic Distance-Redshift Relation

1998-04-23

arxiv.org/abs/astro-ph/9804249v1

Astronomy and Astrophysics

Astrophysics

4 pages, 2 figures

Scientific paper

Modifications in Friedmann-Lemaitre-Robertson-Walker (FLRW) Hubble diagrams caused by mass density inhomogeneities are used to illustrate possible effects on a determination of the mass parameter $\Omega_m$ and the cosmological constant $\Lambda$. The values of these parameters inferred from a given set of observations depend on the fractional amount of matter in inhomogeneities and can differ from those obtained by using standard FLRW Hubble diagrams by as much as a factor of two.

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