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Probing the Time Variation of a Fine Structure Constant Using Galaxy Clusters and the Quintessence Model

Liu, Zhi-E and Liu, Wen-Fei and Zhang, Tong-Jie and Zhai, Zhong-Xu and Bora, Kamal (2021) Probing the Time Variation of a Fine Structure Constant Using Galaxy Clusters and the Quintessence Model. Astrophysical Journal, 922 (1). Art. No. 19. ISSN 0004-637X. doi:10.3847/1538-4357/ac2150.

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We explore a possible time variation of the fine structure constant (α ≡ e²/ℏc) using the Sunyaev–Zel'dovich effect measurements of galaxy clusters along with their X-ray observations. Specifically, the ratio of the integrated Comptonization parameter Y_(SZ)D²_A and its X-ray counterpart Y_X is used as an observable to constrain the bounds on the variation of α. Considering the violation of the cosmic distance duality relation, this ratio depends on the fine structure constant of ∼ α³. We use the quintessence model to provide the origin of α time variation. In order to give a robust test on α variation, two galaxy cluster samples, the 61 clusters provided by the Planck collaboration and the 58 clusters detected by the South Pole Telescope (SPT), are collected for analysis. Their X-ray observations are given by the XMM-Newton survey. Our results give ζ = -0.203_(-0.099)^(+0.101) for the Planck sample and ζ = -0.043_(-0.148)^(+0.165) for the SPT sample, indicating that α is constant with redshift within 3σ and 1σ for the two samples, respectively.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Liu, Zhi-E0000-0003-3153-1296
Zhang, Tong-Jie0000-0002-1596-529X
Zhai, Zhong-Xu0000-0001-7984-5476
Bora, Kamal0000-0002-6372-9363
Additional Information:© 2021. The American Astronomical Society. Received 2021 June 18; revised 2021 August 22; accepted 2021 August 24; published 2021 November 16. We thank the anonymous referee for the helpful and constructive feedback. This work was supported by the National Key R & D Program of China (2017YFA0402600), the Natural Science Foundation of Shandong Province, China (Grant NO.ZR2019MA059), and the National Natural Science Foundation of China (grant No. 11929301). Z.Z. is supported in part by NASA grant 15-WFIRST15-0008, Cosmology with the High Latitude Survey Roman Science Investigation Team (SIT). K.B. acknowledges Department of Science and Technology, Government of India for providing the financial support under the DST-INSPIRE Fellowship program.
Group:Infrared Processing and Analysis Center (IPAC)
Funding AgencyGrant Number
National Key Research and Development Program of China2017YFA0402600
Natural Science Foundation of Shandong ProvinceZR2019MA059
National Natural Science Foundation of China11929301
Department of Science and Technology (India)UNSPECIFIED
Subject Keywords:Quintessence; Cosmological models; Galaxy clusters
Issue or Number:1
Classification Code:Unified Astronomy Thesaurus concepts: Quintessence (1323); Cosmological models (337); Galaxy clusters (584)
Record Number:CaltechAUTHORS:20211203-204701674
Persistent URL:
Official Citation:Zhi-E Liu et al 2021 ApJ 922 19
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:112204
Deposited By: George Porter
Deposited On:03 Dec 2021 23:57
Last Modified:03 Dec 2021 23:57

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