NGC 1052-DF2 And Modified Gravity (MOG) Without Dark Matter

TL;DR

This paper compares Newtonian and modified gravity (MOG) models to explain the velocity dispersion of galaxy NGC 1052-DF2, finding MOG aligns well with observations without invoking dark matter.

Contribution

It demonstrates that MOG can accurately predict the velocity dispersion of NGC 1052-DF2 without dark matter, offering an alternative to Newtonian gravity.

Findings

MOG predicts higher velocity dispersion than Newtonian gravity.

Observed velocity dispersion matches MOG predictions.

Newtonian gravity underestimates the dispersion.

Abstract

We model the velocity dispersion of the ultra-diffuse galaxy NGC 1052-DF2 using Newtonian gravity and modified gravity (MOG). The velocity dispersion predicted by MOG is higher than the Newtonian gravity prediction, but it is fully consistent with the observed velocity dispersion that is obtained from the motion of 10 globular clusters.