Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986mnras.223..539s&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 223, Dec. 1, 1986, p. 539-555.
Astronomy and Astrophysics
Astronomy
52
Dark Matter, Galactic Rotation, Gravitation Theory, Rotating Disks, Spiral Galaxies, Kepler Laws, Mass To Light Ratios, Newton Theory, Relativistic Theory, Supergravity
Scientific paper
Two recently suggested modifications of Newtonian gravity are discussed in the light of general constraints on classical gravity theories and observations of mass discrepancies in galaxies and groups of galaxies. The relativistic theory of Bekenstein and Milgrom (1984) is found to satisfy most of the constraints on the gravity theory, however, proposed relativistic versions of finite length scale antigravity are shown to be inconsistent with local geodesic motion of particles or to contain a ghost field. A modification of the Bekenstein-Milgrom Lagrangian is found to account for the present observed systematics of mass discrepancies in the universe, and it can predict the detailed rotation curves of several spiral galaxies, ranging in size from 8-80 kpc, from the observed distribution of visible matter.
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