The background Friedmannian Hubble constant in relativistic inhomogeneous cosmology and the age of the Universe

Author: Roukema Boudewijn F.   Mourier Pierre   Buchert Thomas   Ostrowski Jan J.  

Publisher: Edp Sciences

E-ISSN: 1432-0746|598|issue|A111-A111

ISSN: 0004-6361

Source: Astronomy & Astrophysics, Vol.598, Iss.issue, 2017-02, pp. : A111-A111

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Abstract

Context. In relativistic inhomogeneous cosmology, structure formation couples to average cosmological expansion. A conservative approach to modelling this assumes an Einstein-de Sitter model (EdS) at early times and extrapolates this forward in cosmological time as a “background model” against which average properties of today’s Universe can be measured.