24-28 September 2017
Kazimierz Dolny, Poland
Europe/Warsaw timezone

Averaging of disturbed Friedmann--Lemaitre cosmological model

25 Sep 2017, 14:50
20m
Kazimierz Dolny, Poland

Kazimierz Dolny, Poland

Dom Pracy Twórczej SDP ul. Małachowskiego 17 24-120 Kazimierz Dolny
Oral presentation (preferred) Cosmology I

Speaker

Krzysztof Głód (Astronomical Observatory of the Jagiellonian University)

Description

We examine a naive perturbative generalization of the Friedmann--Lemaitre cosmological model. We introduce at the metric level parameters which control basic properties of inhomogeneities, their profile, growth rate and density contrast. We give conditions under which the model can be considered reasonable and comment limitations of this approach. Finally, we perform an averaging procedure of the model using the notion of weak limit and propose a method to construct its background model.

Primary author

Krzysztof Głód (Astronomical Observatory of the Jagiellonian University)

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