Non-parametric reconstruction of the fine structure constant with galaxy clusters

IF 4.2 2区物理与天体物理 Q2 PHYSICS, PARTICLES & FIELDS

The European Physical Journal C Pub Date : 2024-10-28 DOI:10.1140/epjc/s10052-024-13468-0

Marcelo Ferreira, Rodrigo F. L. Holanda, Javier E. Gonzalez, L. R. Colaço, Rafael C. Nunes

{"title":"Non-parametric reconstruction of the fine structure constant with galaxy clusters","authors":"Marcelo Ferreira, Rodrigo F. L. Holanda, Javier E. Gonzalez, L. R. Colaço, Rafael C. Nunes","doi":"10.1140/epjc/s10052-024-13468-0","DOIUrl":null,"url":null,"abstract":"<div>Testing possible variations in fundamental constants of nature is a crucial endeavor in observational cosmology. This paper investigates potential cosmological variations in the fine structure constant (\\(\\alpha \\)) through a non-parametric approach, using galaxy cluster observations as the primary cosmological probe. We employ two methodologies based on galaxy cluster gas mass fraction measurements derived from X-ray and Sunyaev–Zeldovich observations, along with luminosity distances from type Ia supernovae. We also explore how different values of the Hubble constant (\\(H_0\\)) impact the variation of \\(\\alpha \\) across cosmic history. When using the Planck satellite’s \\(H_0\\) observations, a constant \\(\\alpha \\) is ruled out at approximately the 3\\(\\sigma \\) confidence level for \\(z \\lesssim 0.5\\). Conversely, employing local estimates of \\(H_0\\) restores agreement with a constant \\(\\alpha \\).</div>","PeriodicalId":788,"journal":{"name":"The European Physical Journal C","volume":"84 10","pages":""},"PeriodicalIF":4.2000,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epjc/s10052-024-13468-0.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"The European Physical Journal C","FirstCategoryId":"4","ListUrlMain":"https://link.springer.com/article/10.1140/epjc/s10052-024-13468-0","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"PHYSICS, PARTICLES & FIELDS","Score":null,"Total":0}

引用次数: 0

Abstract

Testing possible variations in fundamental constants of nature is a crucial endeavor in observational cosmology. This paper investigates potential cosmological variations in the fine structure constant (\(\alpha \)) through a non-parametric approach, using galaxy cluster observations as the primary cosmological probe. We employ two methodologies based on galaxy cluster gas mass fraction measurements derived from X-ray and Sunyaev–Zeldovich observations, along with luminosity distances from type Ia supernovae. We also explore how different values of the Hubble constant (\(H_0\)) impact the variation of \(\alpha \) across cosmic history. When using the Planck satellite’s \(H_0\) observations, a constant \(\alpha \) is ruled out at approximately the 3\(\sigma \) confidence level for \(z \lesssim 0.5\). Conversely, employing local estimates of \(H_0\) restores agreement with a constant \(\alpha \).

查看原文本刊更多论文

用星系团非参数重构精细结构常数

检验自然界基本常数的可能变化是观测宇宙学的一项重要工作。本文利用星系团观测作为主要的宇宙学探测器，通过非参数方法研究了精细结构常数（\(\alpha \)）的潜在宇宙学变化。我们采用了基于星系团气体质量分数测量的两种方法，这些测量来自X射线和Sunyaev-Zeldovich观测，以及Ia型超新星的光度距离。我们还探索了哈勃常数（\(H_0\)）的不同值如何影响整个宇宙历史中\(\alpha \)的变化。当使用普朗克卫星的（H_0）观测数据时，在大约3（sigma）置信水平下，（z （lesssim 0.5））的（α）常数被排除。相反，采用局部估计的 \(H_0\) 恢复了与\(α\)常数的一致。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

The European Physical Journal C 物理-物理：粒子与场物理

CiteScore

8.10

自引率

15.90%

发文量

1008

审稿时长

2-4 weeks

期刊介绍： Experimental Physics I: Accelerator Based High-Energy Physics Hadron and lepton collider physics Lepton-nucleon scattering High-energy nuclear reactions Standard model precision tests Search for new physics beyond the standard model Heavy flavour physics Neutrino properties Particle detector developments Computational methods and analysis tools Experimental Physics II: Astroparticle Physics Dark matter searches High-energy cosmic rays Double beta decay Long baseline neutrino experiments Neutrino astronomy Axions and other weakly interacting light particles Gravitational waves and observational cosmology Particle detector developments Computational methods and analysis tools Theoretical Physics I: Phenomenology of the Standard Model and Beyond Electroweak interactions Quantum chromo dynamics Heavy quark physics and quark flavour mixing Neutrino physics Phenomenology of astro- and cosmoparticle physics Meson spectroscopy and non-perturbative QCD Low-energy effective field theories Lattice field theory High temperature QCD and heavy ion physics Phenomenology of supersymmetric extensions of the SM Phenomenology of non-supersymmetric extensions of the SM Model building and alternative models of electroweak symmetry breaking Flavour physics beyond the SM Computational algorithms and tools...etc.