A bias using the ages of the oldest astrophysical objects to address the Hubble tension

被引：4

作者：

Costa, Andre A. ^{[1
,2
]}

Ren, Zelin ^{[2
]}

Yin, Zhixiang ^{[2
]}

机构：

[1] Nanjing Univ Aeronaut & Astronaut, Coll Phys, Nanjing 211106, Peoples R China

[2] Yangzhou Univ, Coll Phys Sci & Technol, Ctr Gravitat & Cosmol, Yangzhou 225009, Peoples R China

来源：

EUROPEAN PHYSICAL JOURNAL C | 2023年 / 83卷 / 09期

基金：

中国国家自然科学基金;

关键词：

CONSTRAINTS; CONSTANT; LAMBDA; UNIVERSE; TIME;

D O I：

10.1140/epjc/s10052-023-12038-0

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：

Recently different cosmological measurements have shown a tension in the value of the Hubble constant, H-0. Assuming the Lambda CDM model, the Planck satellite mission has inferred the Hubble constant from the cosmic microwave background (CMB) anisotropies to be H0 = 67.4 +/- 0.5 kms(-1) Mpc(-1). On the other hand, low redshift measurements such as those using Cepheid variables and supernovae Type Ia (SNIa) have obtained a significantly larger value. For instance, Riess et al. reported H-0 = 73.04 +/- 1.04 km s(-1) Mpc(-1), which is 5 sigma apart of the prediction from Planck observations. This tension is a major problem in cosmology nowadays, and it is not clear yet if it comes from systematic effects or new physics. The use of new methods to infer the Hubble constant is therefore essential to shed light on this matter. In this paper, we discuss using the ages of the oldest astrophysical objects (O Lambda O) to probe theHubble tension. We showthat, although this data can provide additional information, the method can also artificially introduce a tension. Reanalyzing the ages of 114 O Lambda O, we obtain that the constraint in the Hubble constant goes from slightly disfavoring local measurements to favoring them.

引用

页数：7

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