Spherical Scalar Field Halo in Galaxies

Details Spherical Scalar Field Halo in Galaxies Spherical Scalar Field Halo in Galaxies

2000-03-26

arxiv.org/abs/astro-ph/0003398v2

Phys.Rev.D62:061301,2000

Astronomy and Astrophysics

Astrophysics

5 REVTeX pages, no figures. Contains important suggestions provided by the referee. Final version, to appear in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.62.061301

We study a spherically symmetric fluctuation of scalar dark matter in the cosmos and show that it could be the dark matter in galaxies, provided that the scalar field has an exponential potential whose overall sign is negative and whose exponent is constrained observationally by the rotation velocities of galaxies. The local space-time of the fluctuation contains a three dimensional space-like hypersurface with surplus of angle.

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