# Low-acceleration dwarf galaxies as tests of quantised inertia

## TL;DR

This paper tests quantised inertia, a modification of inertia, on Milky Way dwarf galaxies and finds it predicts their stellar velocities slightly better than MoND without requiring adjustable parameters.

## Contribution

The study applies quantised inertia to dwarf galaxies and demonstrates its predictive advantage over MoND with no free parameters.

## Key findings

- Quantised inertia slightly outperforms MoND in velocity predictions.
- Quantised inertia requires no adjustable parameters.
- Supports quantised inertia as a viable alternative to dark matter.

## Abstract

Dwarf satellite galaxies of the Milky Way appear to be gravitationally bound, but their stars' orbital motion seems too fast to allow this given their visible mass. This is akin to the larger-scale galaxy rotation problem. In this paper, a modification of inertia called quantised inertia or MiHsC (Modified inertia due to a Hubble-scale Casimir effect) which correctly predicts larger galaxy rotations without dark matter is tested on eleven dwarf satellite galaxies of the Milky Way, for which mass and velocity data are available. Quantised inertia slightly outperforms MoND (Modified Newtonian Dynamics) in predicting the velocity dispersion of these systems, and has the fundamental advantage over MoND that it does not need an adjustable parameter.