A comparison of cosmological models with high-redshift quasars

被引：2
|
作者：
Fan, Liuyuan [1 ]
Fang, Guanwen [1 ]
Hu, Jian [2 ]
机构：
[1] Anqing Normal Univ, Inst Astron & Astrophys, Anqing 246133, Peoples R China
[2] Dali Univ, Dept Engn, Dali 671003, Peoples R China
来源：
ASTROPHYSICS AND SPACE SCIENCE | 2023年 / 368卷 / 07期
基金：
中国国家自然科学基金;
关键词：
Cosmology; Quasars; Cosmological parameters; R-H; HUBBLE DIAGRAM; CT; LUMINOSITY; LAMBDA;
D O I：
10.1007/s10509-023-04215-0
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
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 similar to 6, to compare the flat and uniformly expanding cosmological model, R-h=ct and Lambda 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 Lambda CDM over R-h=ct with a relative probability of similar to 86.30% versus similar to 13.70%.
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页数：7
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