Variable Modified Newtonian Mechanics VIII: Ultra faint dwarfs in Milky Way

TL;DR

This paper applies Variable Modified Newtonian Dynamics to ultra faint dwarf galaxies to explain their velocity dispersion deviations from the Baryon Tully Fisher Relation, challenging dark matter explanations.

Contribution

It introduces a modified gravity model to account for UFD galaxy dynamics, providing an alternative to dark matter hypotheses.

Findings

Variable Modified Newtonian Dynamics explains UFD velocity dispersions.

The model accounts for deviations from the BTFR in ultra faint dwarfs.

Supports modified gravity as an alternative to dark matter in small galaxies.

Abstract

Velocity dispersions of Ultra faint dwarf (UFD) galaxies are observed to deviate significantly from the Baryon Tully Fisher Relation of the massive galaxies (BTFR). We propose a solution with Variable Modified Newtonian dynamics model, which could explain this deviation.