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

Authors :: de Martino, I.
Martins, C. J. A. P.
Ebeling, H.
Kocevski, D.
Source :: Universe 2(4), 34 (2016)
Publication Year :: 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.<br />Comment: 10 pages, 1 figures, based on arXiv:1605.03053 and on the oral presentation at VARCOSMOFUN16, accepted for publication in "Universe", Special Issue "Varying Constants and Fundamental Cosmology" for the VARCOSMOFUN16 in Szczecin, Poland, 12-17 September, 2016

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