Does ΛCDM really be in tension with the Hubble diagram data?

被引：0
作者：
Mehrabi, Ahmad [1 ]
Basilakos, Spyros [2 ]
机构：
[1] Bu Ali Sina Univ, Dept Phys, Hamadan 65178016016, Hamadan, Iran
[2] Acad Athens, Res Ctr Astron & Appl Math, Soranou Efessiou 4, Athens 11527, Greece
来源：
EUROPEAN PHYSICAL JOURNAL C | 2020年 / 80卷 / 07期
关键词：
DARK ENERGY SURVEY; COSMOLOGICAL CONSTANT; GALAXIES; DYNAMICS; GROWTH; SCALE;
D O I：
10.1140/epjc/s10052-020-8221-2
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
In this article, we elaborate further on the.CDM "tension", suggested recently by the authors Lusso et al. (Astron Astrophys 628:L4, 2019) and Risaliti and Lusso (Nat Astron 3(3):272, 2019). We combine Supernovae type Ia (SNIa) with quasars (QSO) and Gamma RayBursts (GRB) data in order to reconstruct in a model independent way the Hubble relation to as high redshifts as possible. Specifically, in the case of either SNIa or SNIa/QSO data we find that the current values of the cosmokinetic parameters extracted from the Gaussian process are consistent with those of Lambda CDM. Including GRBs in the analysis we find a tension, which lies between 2s and 3s levels respectively. Finally, we find that at high redshifts ( z > 1) the corresponding cosmokinetic parameters significantly deviate from those of Lambda CDM, hence the possibility of new Physics is not precluded by the present analysis.
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页数：8
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