Scalar fields as dark matter in spiral galaxies

Authors
Guzman, FS Matos, T
Citation
Fs. Guzman et T. Matos, Scalar fields as dark matter in spiral galaxies, CLASS QUANT, 17(1), 2000, pp. L9-L16
Citations number
18
Categorie Soggetti
Physics
Journal title
CLASSICAL AND QUANTUM GRAVITY
ISSN journal
02649381 → ACNP
Volume
17
Issue
1
Year of publication
2000
Pages
L9 - L16
Database
ISI
SICI code
0264-9381(20000107)17:1<L9:SFADMI>2.0.ZU;2-Y
Abstract
We present a model for the dark matter in spiral galaxies, which is a resul t of a static and axial symmetric exact solution of the Einstein-dilaton th eory. We suppose that dark; matter is a scalar field endowed with a scaler potential. We obtain that (a) the effective energy density goes like 1/(r(2 ) + r(c)(2)) and (b) the resulting circular velocity profile of test partic les is in good agreement with the observed one.