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Journal of Gravity
Volume 2016, Article ID 9706704, 22 pages
http://dx.doi.org/10.1155/2016/9706704
Review Article

Clusters of Galaxies in a Weyl Geometric Approach to Gravity

Faculty of Mathematics & Natural Sciences and Interdisciplinary Centre for History and Philosophy of Science, University of Wuppertal, 42119 Wuppertal, Germany

Received 14 March 2016; Revised 20 April 2016; Accepted 3 May 2016

Academic Editor: Jose Antonio De Freitas Pacheco

Copyright © 2016 Erhard Scholz. 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.

Abstract

A model for the dark halos of galaxy clusters, based on the Weyl geometric scalar tensor theory of gravity (WST) with a MOND-like approximation, is proposed. It is uniquely determined by the baryonic mass distribution of hot gas and stars. A first heuristic check against empirical data for 19 clusters (2 of which are outliers), taken from the literature, shows encouraging results. Modulo a caveat resulting from different background theories (Einstein gravity plus versus WST), the total mass for 15 of the outlier reduced ensemble of 17 clusters seems to be predicted correctly (in the sense of overlapping error intervals).