Defying the laws of Gravity I: Model-independent reconstruction of the Universe expansion from growth data - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Monthly Notices of the Royal Astronomical Society Année : 2020

Defying the laws of Gravity I: Model-independent reconstruction of the Universe expansion from growth data

Benjamin L'Huillier
  • Fonction : Auteur
Arman Shafieloo
  • Fonction : Auteur
Alexei A. Starobinsky
  • Fonction : Auteur

Résumé

Using redshift space distortion data, we perform model-independent reconstructions of the growth history of matter inhomogeneity in the expanding Universe using two methods: crossing statistics and Gaussian processes. We then reconstruct the corresponding history of the Universe background expansion and fit it to Type Ia supernovae data, putting constraints on (Ω_m, 0, σ_8, 0). The results obtained are consistent with the concordance flat-ΛCDM model and General Relativity as the gravity theory given the current quality of the inhomogeneity growth data.

Dates et versions

hal-02178711 , version 1 (10-07-2019)

Identifiants

Citer

Benjamin L'Huillier, Arman Shafieloo, David Polarski, Alexei A. Starobinsky. Defying the laws of Gravity I: Model-independent reconstruction of the Universe expansion from growth data. Monthly Notices of the Royal Astronomical Society, 2020, 494 (1), pp.819-826. ⟨10.1093/mnras/staa633⟩. ⟨hal-02178711⟩
45 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More