Spiral Galaxies Rotation Curves with a Logarithmic Corrected Newtonian Gravitational Potential

Abstract

We analyze the rotation curves of 10 spiral galaxies with a newtonian potential corrected with an extra logarithmic term, using a disc modelization for the spiral galaxies. There is a new constant associated with the extra term in the potential. The rotation curve of the chosen sample of spiral galaxies is well reproduced for a given range of the new constant. It is argued that this correction can have its origin from string configurations. The compatibility of this correction with local physics is discussed.

Latex file, 6 pages, 20 figures

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