Milky Way radial and vertical dynamics are inconsistent with MOND and STVG but consistent with dark matter halos, disfavoring the former at high significance.
The Radial Acceleration Relation in Rotationally Supported Galaxies
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abstract
We report a correlation between the radial acceleration traced by rotation curves and that predicted by the observed distribution of baryons. The same relation is followed by 2693 points in 153 galaxies with very different morphologies, masses, sizes, and gas fractions. The correlation persists even when dark matter dominates. Consequently, the dark matter contribution is fully specified by that of the baryons. The observed scatter is small and largely dominated by observational uncertainties. This radial acceleration relation is tantamount to a natural law for rotating galaxies.
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Gas-dominated galaxies in SPARC exhibit rightward curving geometry in normalized g2-space (r_obs > r_bar), unlike the full sample, indicating the true dynamics and radial dependence of disk mass-to-light ratios.
citing papers explorer
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Milky Way Dynamics Favor Dark Matter over Modified Gravity Models
Milky Way radial and vertical dynamics are inconsistent with MOND and STVG but consistent with dark matter halos, disfavoring the former at high significance.
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Investigating Dark Matter and MOND Models with Galactic Rotation Curve Data: Analysing the Gas-Dominated Galaxies
Gas-dominated galaxies in SPARC exhibit rightward curving geometry in normalized g2-space (r_obs > r_bar), unlike the full sample, indicating the true dynamics and radial dependence of disk mass-to-light ratios.
- Spontaneous Symmetry Breaking and the Vacuum Displacement Principle: From Galactic Scales to Cosmic Fine-Tuning