2001/08/09 by Tonatiuh Matos, T. Matos, F. S. Guzman +1 · 1 citation
Physics and Astronomy · #Cosmology and Gravitation Theories #Galaxies: Formation, Evolution, Phenomena #Scientific Research and Discoveries #astro-ph #gr-qc #hep-th
paper · pdf · doi:10.1088/0264-9381/18/23/303
published as Class.Quant.Grav. 18 (2001) 5055-5064 · 8 pages REVTeX, 11 eps figures
arxiv created 2001/08/09 · openalex publication_date 2001/11/22 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30
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 spacetime 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 dust and the other scalar field distributes far from the coordinate centre and can be interpreted as a halo. We show the behaviour of the rotation curves all along the background. Thus the solution could be a first approximation of a 'long exposition photograph' of a galaxy.