Modified Gravitational Theory and Galaxy Rotation Curves

Details Modified Gravitational Theory and Galaxy Rotation Curves Modified Gravitational Theory and Galaxy Rotation Curves

2004-04-16

arxiv.org/abs/gr-qc/0404076v4

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

26 pages, 1 Table, 17 Figures. Latex file. Additional text, new references, 2 new figures. Typos corrected

Scientific paper

The nonsymmetric gravitational theory predicts an acceleration law that modifies the Newtonian law of attraction between particles. For weak fields a fit to the flat rotation curves of galaxies is obtained in terms of the mass (mass-to-light ratio M/L) of galaxies. The fits assume that the galaxies are not dominated by exotic dark matter. The equations of motion for test particles reduce for weak gravitational fields to the GR equations of motion and the predictions for the solar system and the binary pulsar PSR 1913+16 agree with the observations. The gravitational lensing of clusters of galaxies can be explained without exotic dark matter.

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