期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 350, 期 2, 页码 707-709出版社
OXFORD UNIV PRESS
DOI: 10.1111/j.1365-2966.2004.07679.x
关键词
galaxies : kinematics and dynamics
Galactic dark matter is modelled by a scalar field. In particular, it is shown that an analytically solvable toy model with a non-linear self-interaction potential U(Phi) leads to dark halo models which have the form of quasi-isothermal spheres. We argue that these fit the observed rotation curves of galaxies better than the centrally cusped haloes of standard cold dark matter. The scalar field model predicts a proportionality between the central densities of the dark haloes and the inverse of their core radii. We test this prediction successfully against a set of rotation curves of low-surface-brightness galaxies and nearby bright galaxies.
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