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- Title
A comparison of cosmological models with high-redshift quasars.
- Authors
Fan, Liuyuan; Fang, Guanwen; Hu, Jian
- Abstract
The non-linear relationship between the monochromatic X-ray and UV luminosities in quasars offers the possibility of using high-z quasars as standard candles for cosmological testing. In this paper, we use a high-quality catalog of 1598 quasars extending to redshift ∼ 6 , to compare the flat and uniformly expanding cosmological model, R h = c t and Λ CDM cosmological models which are the most debated. The quasar samples are mainly from the XMM-Newton and the Sloan Digital Sky Survey (SDSS). The final result is that the Akaike Information Criterion favors Λ CDM over R h = c t with a relative probability of ∼ 86.30 % versus ∼ 13.70 % .
- Subjects
SLOAN Digital Sky Survey; REDSHIFT; QUASARS; AKAIKE information criterion; ASTRONOMICAL surveys
- Publication
Astrophysics & Space Science, 2023, Vol 368, Issue 7, p1
- ISSN
0004-640X
- Publication type
Article
- DOI
10.1007/s10509-023-04215-0