Cosmological solution for the problem of rotation velocities in galaxies

TL;DR

This paper proposes a cosmological solution to explain galaxy rotation curves without dark matter, deriving empirical results consistent with modified gravity theories through a universe-wide mass distribution approach.

Contribution

It introduces a cosmological model that accounts for galaxy rotation velocities without dark matter, connecting it to existing modified gravity theories.

Findings

Rotation curves explained without dark matter.

A limiting galaxy radius based on cosmological parameters.

Consistency with Milgrom and Bekenstein's theories.

Abstract

A solution for the problem of understanding observed rotation curves in galaxies without the introduction of dark matter halos is presented. This solution has been obtained upon considering the distribution of masses in the expanding universe, then, having a cosmological character. A formal limiting radius for galaxies depending on cosmological parameters is given. The empirical conclusions derived from the theory of M. Milgrom and J. Bekenstein arise as direct consequences of the present approach without any need of drastically modifying newtonian dynamics.