An f(R) model for dark matter: rotation curves and gravitational lensing
General Relativity and Quantum Cosmology
2014-04-02 v1
Abstract
There should be two ways to describe the flat rotation curves of galaxies and cluster of galaxies. Either one can introduce a dark matter component for the matter filling the halo, or by modifying the gravity theory and give the flat rotation curve a geometrical nature. Here we adopt an f(R) model suitable for describing the effect. After matching the solution with the exterior solution, the effective density, radial and tangential pressures are obtained. Then the energy conditions and lensing effect is investigated.
Keywords
Cite
@article{arxiv.1404.0299,
title = {An f(R) model for dark matter: rotation curves and gravitational lensing},
author = {F. Shojai and A. Shojai},
journal= {arXiv preprint arXiv:1404.0299},
year = {2014}
}