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Are galactic rotation curves really flat?
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abstract
In this paper we identify a new regularity in the systematics of galactic rotation curves, namely we find that at the last detected points in galaxies of widely varying luminosity, the centripetal acceleration is found to have the completely universal form $v^2/R=c^2(\gamma_0+\gamma^{*}N^{*})/2$ where $\gamma_0$ and $\gamma^{*}$ are new universal constants and $N^{*}$ is the amount of visible matter in each galaxy. This regularity points to a role for the linear potentials associated with conformal gravity, with the galaxy independent $\gamma_0$ term being found to be generated not from within individual galaxies at all, but rather to be of cosmological origin being due to the global Hubble flow of a necessarily spatially open Universe of 3-space scalar curvature $k=-(\gamma_0/2)^2=-2.3 \times 10^{-60}$cm$^{-2}$.
Forward citations
Cited by 2 Pith papers
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Modification of the laws of gravity in the DGP model by the presence of a second DGP brane
In a two-brane DGP model, the gravitational potential between sources on different branes is controlled by a new scale ρ=√(rc R), producing weaker-than-5D gravity and a distance-independent force for R≪r≪ρ.
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Modified Gravity Theories in Light of the Anomalous Velocity Dispersion of NGC1052-DF2
NGC1052-DF2 and NGC1052-DF4 velocity dispersions are consistent with MOND, MOG, Weyl gravity and GR without dark matter, but Verlinde's emergent gravity is disfavored at D=20 Mpc.
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