Scalar fields properties for flat galactic rotation curves

Details Scalar fields properties for flat galactic rotation curves Scalar fields properties for flat galactic rotation curves

2004-02-24

arxiv.org/abs/gr-qc/0402103v1

Astron.Astrophys.413:799,2004; Astron.Astrophys.413:799-805,2004

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

10 pages

Scientific paper

10.1051/0004-6361:20031540

The whole class of minimally coupled and massive scalar fields which may be responsible for flattening of galactic rotation curves is found. An interesting relation with a class of scalar-tensor theories able to isotropise anisotropic models of Universe is shown. The resulting metric is found and its stability and scalar field properties are tested with respect to the presence of a second scalar field or a small perturbation of the rotation velocity at galactic outer radii.

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