Clusters of galaxies in a Weyl geometric approach to gravity
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).
Keywords
Cite
@article{arxiv.1506.09138,
title = {Clusters of galaxies in a Weyl geometric approach to gravity},
author = {Erhard Scholz},
journal= {arXiv preprint arXiv:1506.09138},
year = {2016}
}
Comments
Version 5 is a corrected, and in some minor aspects improved, postprint of the paper of published in Journal of Gravity (JG) volume 2016, article ID 9706704. The most important corrections refer to equs. (28) and (47) of the publication in JG. A new run of the data evaluation becomes necessary. The results are given here