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

I. de Martino; C. J. A. P. Martins; H. Ebeling; D. Kocevski

doi:10.3390/universe2040034

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arXiv · 1612.06739

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

I. de Martino·C. J. A. P. Martins·H. Ebeling·D. Kocevski

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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.

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I. de Martino, C. J. A. P. Martins, H. Ebeling, D. Kocevski. 2016-12-20. New Constraints on Spatial Variations of the Fine Structure Constant from Clusters of Galaxies. https://doi.org/10.3390/universe2040034

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