Work

Cosmological constraints from angular homogeneity scale measurements

Year: 2025

Type: article

Abstract: In this paper, we obtain new measurements of the angular homogeneity scale ( $$\theta _H$$ θ H ) from the BOSS DR12 and eBOSS DR16 catalogs of Luminous Red Galaxies of the Sloan Digital Sky Survey. Considering the flat $$\Lambda $$ Λ CDM model, we use the $$\theta _H(z)$$ θ H ( z ) data to constrain the matter density parameter ( $$\Omega _{m0}$$ Ω m 0 ) and the Hubble constant ( $$H_{0}$$ H 0 ). We find $$H_0 = 65^{+10}_{-7}$$ H 0 = 65 - 7 + 10 km s $$^{-1}$$ - 1 Mpc $$^{-1}$$ - 1 and $$\Omega _{m0}>0.296$$ Ω m 0 > 0.296 . By combining the $$\theta _H$$ θ H measurements with current Baryon Acoustic Oscillations (BAO) and Type Ia Supernova (SN) data, we obtain $$H_{0}= 66.8 \pm 5.0$$ H 0 = 66.8 ± 5.0 km s $$^{-1}$$ - 1 Mpc $$^{-1}$$ - 1 and

Source: The European Physical Journal C

DOI: 10.1140/epjc/s10052-025-13987-4

Authors: Xiaoyun Shao, Carlos A. P. Bengaly, Rodrigo S. Gonçalves, Gabriela C. Carvalho, Jailson Alcaniz

Institutions: National Observatory, Universidade Federal Rural do Rio de Janeiro, Universidade do Estado do Rio de Janeiro

Language: English

Topic: Cosmology and Gravitation Theories

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: diamond

Funders: Coordenação de Aperfeiçoamento de Pessoal de Nível Superior, Conselho Nacional de Desenvolvimento Científico e Tecnológico, Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro

Awards: G4392370125, G500536414, G699155858