Measuring the cosmic homogeneity scale with SDSS-IV DR16 quasars. Issue 3 (11th March 2021)

• Record Type: Journal Article
• Authors: Gonçalves, Rodrigo S.; Carvalho, Gabriela C.; Andrade, Uendert; Bengaly, Carlos A.P.; Carvalho, Joel C.; Alcaniz, Jailson
• Is Part Of: Journal of cosmology and astroparticle physics. Volume 2021:Issue 3(2021)
• Publication Date: 2021-03-11
• Subjects: cosmic web -- cosmological parameters from LSS -- power spectrum; Cosmology -- Periodicals; Astrophysics -- Periodicals; 523.0105
• DOI: 10.1088/1475-7516/2021/03/029
• Languages: English
• ISSNs: 1475-7516

Abstract

Abstract: We report measurements of the scale of cosmic homogeneity (rh ) using the recently released quasar sample of the sixteenth data release of the Sloan Digital Sky Survey (SDSS-IV DR16). We perform our analysis in 2 redshift bins lying in the redshift interval 2.2 < z < 3.2 by means of the fractal dimension D_2. By adopting the usual assumption that rh is obtained when D2 ∼ 2.97, that is, within 1% of D2 =3, we find the cosmic homogeneity scale with a decreasing trend with redshift, and in good agreement with the ΛCDM prediction. Our results confirm the presence of a homogeneity scale in the spatial distribution of quasars as predicted by the fundamental assumptions of the standard cosmological model.