Scalar Fields as Dark Matter in Spiral Galaxies

Details Scalar Fields as Dark Matter in Spiral Galaxies Scalar Fields as Dark Matter in Spiral Galaxies

1998-10-08

arxiv.org/abs/gr-qc/9810028v4

Class.Quant.Grav.17:L9-L16,2000

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

5 pages, RevTeX, eight eps figures. To appear in Classical and Quantum Gravity

Scientific paper

10.1088/0264-9381/17/1/102

We present a model for the dark matter in spiral galaxies, which is a result of a static and axial symmetric exact solution of the Einstein-Dilaton theory. We suposse that dark matter is a scalar field endowed with a scalar potential. We obtain that a) the effective energy density goes like $1/(r^2+r_{c}^{2})$ and b) the resulting circular velocity profile of tests particles is in good agreement with the observed one.

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