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Article Dans Une Revue Physical Review D Année : 2010

Szekeres Swiss-cheese model and supernova observations

Résumé

We use different particular classes of axially symmetric Szekeres Swiss-cheese models for the study of the apparent dimming of the supernovae of type Ia. We compare the results with those obtained in the corresponding Lemaître-Tolman Swiss-cheese models. Although the quantitative picture is different the qualitative results are comparable, i.e., one cannot fully explain the dimming of the supernovae using small-scale (˜50Mpc) inhomogeneities. To fit successfully the data we need structures of order of 500 Mpc size or larger. However, this result might be an artifact due to the use of axial light rays in axially symmetric models. Anyhow, this work is a first step in trying to use Szekeres Swiss-cheese models in cosmology and it will be followed by the study of more physical models with still less symmetry.

Dates et versions

hal-03785780 , version 1 (23-09-2022)

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Krzysztof Bolejko, Marie-Noëlle Célérier. Szekeres Swiss-cheese model and supernova observations. Physical Review D, 2010, 82, pp.103510. ⟨10.1103/PhysRevD.82.103510⟩. ⟨hal-03785780⟩
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