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Universe 2016, 2(4), 34; doi:10.3390/universe2040034

New Constraints on Spatial Variations of the Fine Structure Constant from Clusters of Galaxies

1
Faculty of Science and Technology, Department of Theoretical Physics and History of Science, University of the Basque Country (UPV/EHU), Barrio Sarriena s/n, 48940 Leioa, Spain
2
Centro de Astrofisica da Universidade do Porto, Rua das Estrelas s/n, 4150-762 Porto, Portugal
3
Instituto de Astrofísica e Ciências do Espaço, CAUP, Rua das Estrelas, 4150-762 Porto, Portugal
4
Institute for Astronomy, University of Hawaii, Honolulu, HI 96822, USA
5
Department of Physics and Astronomy, Colby College, Waterville, ME 04901, USA
*
Author to whom correspondence should be addressed.
Academic Editors: Mariusz P. Dąbrowski, Manuel Krämer and Vincenzo Salzano
Received: 30 October 2016 / Revised: 6 December 2016 / Accepted: 12 December 2016 / Published: 21 December 2016
(This article belongs to the Special Issue Varying Constants and Fundamental Cosmology)
View Full-Text   |   Download PDF [671 KB, uploaded 21 December 2016]   |  

Abstract

We have constrained the spatial variation of the fine structure constant using multi-frequency measurements of the thermal Sunyaev-Zeldovich effect of 618 X-ray selected clusters. Although our results are not competitive with the ones from quasar absorption lines, we improved by a factor 10 and ∼2.5 previous results from Cosmic Microwave Background power spectrum and from galaxy clusters, respectively. View Full-Text
Keywords: cluster of galaxies; Cosmic Microwave Background; varying fine structure constant; Sunyaev-Zeldovich effect cluster of galaxies; Cosmic Microwave Background; varying fine structure constant; Sunyaev-Zeldovich effect
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

De Martino, I.; Martins, C.J.A.P.; Ebeling, H.; Kocevski, D. New Constraints on Spatial Variations of the Fine Structure Constant from Clusters of Galaxies. Universe 2016, 2, 34.

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