Curvature, Galactic Dynamics and Cosmic Repulsion

Details Curvature, Galactic Dynamics and Cosmic Repulsion Curvature, Galactic Dynamics and Cosmic Repulsion

1998-11-16

arxiv.org/abs/astro-ph/9811256v1

Astronomy and Astrophysics

Astrophysics

LaTeX, 4 pages. To appear in the Proceedings of the International Conference on Galaxy Dynamics, Rutgers University, August 19

Scientific paper

We show that a cosmological negative spatial curvature can account for both a recently identified phenomenological imprint of the global Hubble flow on galactic rotation curves and for the recently detected cosmic repulsion and cosmic acceleration. Even though such a negative curvature (a curvature which a galactic rest frame observer recognizes as a universal linear potential which gives rise to a universal acceleration) is only achievable in standard gravity by extreme fine tuning, nonetheless, it is naturally realizable in conformal gravity, a currently viable, fully covariant, candidate alternate gravitational theory.

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