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Measuring the cosmic homogeneity scale with SDSS-IV DR16 Quasars
- Source :
- JCAP 03 (2021) 029
- Publication Year :
- 2020
-
Abstract
- We report measurements of the scale of cosmic homogeneity ($r_{h}$) 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 $r_{h}$ is obtained when $D_2 \sim 2.97$, that is, within 1% of $D_2=3$, we find the cosmic homogeneity scale with a decreasing trend with redshift, and in good agreement with the $\Lambda$CDM 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.<br />Comment: 8 pages, 3 figures, accepted for publication in JCAP
- Subjects :
- Astrophysics - Cosmology and Nongalactic Astrophysics
Subjects
Details
- Database :
- arXiv
- Journal :
- JCAP 03 (2021) 029
- Publication Type :
- Report
- Accession number :
- edsarx.2010.06635
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1088/1475-7516/2021/03/029