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

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...

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Veröffentlicht in:	Universe (Basel) 2016-12, Vol.2 (4), p.34
Hauptverfasser:	De Martino, Ivan, Martins, Carlos, Ebeling, Harald, Kocevski, Dale
Format:	Artikel
Sprache:	eng
Schlagworte:	Anisotropy Asymmetry Big Bang theory Body temperature cluster of galaxies Cosmic Microwave Background Kinematics Parameter estimation Stars & galaxies Sunyaev-Zeldovich effect varying fine structure constant
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Zusammenfassung:	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.
ISSN:	2218-1997 2218-1997
DOI:	10.3390/universe2040034