Testing quantised inertia on galactic scales

TL;DR

This paper proposes a modified inertia model based on Unruh radiation and a Casimir effect, successfully predicting galactic rotation curves without dark matter and suggesting new testable predictions.

Contribution

It introduces a novel inertia modification model using Unruh radiation and a Casimir effect, explaining galactic dynamics without dark matter.

Findings

Accurately predicts galactic rotation velocities within error margins

Derives the Tully-Fisher relation from the model

Predicts a lower acceleration limit at galaxy edges

Abstract

Galaxies and galaxy clusters have rotational velocities apparently too fast to allow them to be gravitationally bound by their visible matter. This has been attributed to the presence of invisible (dark) matter, but so far this has not been directly detected. Here, it is shown that a new model that modifies inertial mass by assuming it is caused by Unruh radiation, which is subject to a Hubble-scale (Theta) Casimir effect predicts the rotational velocity (v) to be: v^4=2GMc^2/Theta (the Tully-Fisher relation) where G is the gravitational constant, M is the baryonic mass and c is the speed of light. The model predicts the outer rotational velocity of dwarf and disk galaxies, and galaxy clusters, within error bars, without dark matter or adjustable parameters, and makes a prediction that local accelerations should remain above 2c^2/Theta at a galaxy's edge.