New Constraints on Spatial Variations of the Fine Structure Constant from Clusters of Galaxies
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
Centro de Astrofisica da Universidade do Porto, Rua das Estrelas s/n, 4150-762 Porto, Portugal
Instituto de Astrofísica e Ciências do Espaço, CAUP, Rua das Estrelas, 4150-762 Porto, Portugal
Institute for Astronomy, University of Hawaii, Honolulu, HI 96822, USA
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
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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.
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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.
De Martino I, Martins CJAP, Ebeling H, Kocevski D. New Constraints on Spatial Variations of the Fine Structure Constant from Clusters of Galaxies. Universe. 2016; 2(4):34.
De Martino, Ivan; Martins, Carlos J.A.P.; Ebeling, Harald; Kocevski, Dale. 2016. "New Constraints on Spatial Variations of the Fine Structure Constant from Clusters of Galaxies." Universe 2, no. 4: 34.
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