2017/05/31 by Ciprian A. Sporea, Andrzej Borowiec, Aneta Wojnar · 1 citation
Physics and Astronomy · #gr-qc
paper · pdf · doi:10.1140/epjc/s10052-018-5792-2
6 two-collumn pages, 2 figures, 1 table; Major changes in v2; version to match the published one in Eur. Phys. J. C
arxiv created 2018/04/11 · arxiv updated 2018/04/13
We propose a new formula to explain circular velocity profiles of spiral galaxies obtained from the Starobinsky model in Palatini formalism. It is based on the assumption that the gravity can be described by two conformally related metrics: one of them is responsible for the measurement of distances, while the other so-called dark metric, is responsible for a geodesic equation and therefore can be used for the description of the velocity profile. The formula is tested against a subset of galaxies taken from the HI Nearby Galaxy Survey (THINGS).