On the Space Time of a Galaxy

Details On the Space Time of a Galaxy On the Space Time of a Galaxy

2001-08-09

arxiv.org/abs/gr-qc/0108027v1

Class.Quant.Grav. 18 (2001) 5055-5064

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

8 pages REVTeX, 11 eps figures

Scientific paper

10.1088/0264-9381/18/23/303

We present an exact solution of the averaged Einstein's field equations in the presence of two real scalar fields and a component of dust with spherical symmetry. We suggest that the space-time found provides the characteristics required by a galactic model that could explain the supermassive central object and the dark matter halo at once, since one of the fields constitutes a central oscillaton surrounded by the dust and the other scalar field distributes far from the coordinate center and can be interpreted as a halo. We show the behavior of the rotation curves all along the background. Thus, the solution could be a first approximation of a ``long exposition photograph'' of a galaxy.

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