On Dark Matter, Spiral Galaxies, and the Axioms of General Relativity

TL;DR

This paper proposes that scalar field dark matter, based on general relativity axioms, can explain spiral and barred galaxy patterns and elliptical galaxy brightness profiles, supported by preliminary simulations.

Contribution

It introduces a novel scalar field dark matter model that accounts for galaxy structures and compares simulation results with real galaxy images.

Findings

Scalar field dark matter can form density waves in galaxies.

Preliminary simulations match observed galaxy patterns.

Unified explanation for spiral, barred, and elliptical galaxy features.

Abstract

Beginning with a geometric motivation for dark matter going back to the axioms of general relativity, we show how scalar field dark matter, which naturally forms dark matter density waves due to its wave nature, may cause the observed barred spiral pattern density waves in many disk galaxies and triaxial shapes with plausible brightness profiles in many elliptical galaxies. If correct, this would provide a unified explanation for spirals and bars in spiral galaxies and for the brightness profiles of elliptical galaxies. We compare the results of preliminary computer simulations with photos of actual galaxies.