Scalar fields as dark matter in spiral galaxies
- 13 December 1999
- journal article
- letter
- Published by IOP Publishing in Classical and Quantum Gravity
- Vol. 17 (1) , L9-L16
- https://doi.org/10.1088/0264-9381/17/1/102
Abstract
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 suppose 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 +rc 2 ) and (b) the resulting circular velocity profile of test particles is in good agreement with the observed one.Keywords
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