Galactic rotation curves in Einstein's conformal gravity
General Relativity and Quantum Cosmology
2019-06-13 v1 Astrophysics of Galaxies
High Energy Physics - Theory
Abstract
We show quantitatively that an exact solution of Einstein's conformal gravity can explain very well the galactic rotation curves for a sample of 104 galaxies without need for dark matter or other exotic modification of gravity. The metric is an overall rescaling of the Schwarzschild-de Sitter spacetime as required by Weyl conformal invariance, which has to be spontaneously broken, and the velocity of the stars depends only on two universal parameters determined on the base of the observational data.
Cite
@article{arxiv.1906.05185,
title = {Galactic rotation curves in Einstein's conformal gravity},
author = {Qiang Li and Leonardo Modesto},
journal= {arXiv preprint arXiv:1906.05185},
year = {2019}
}
Comments
17 pages, 8 figures