Astronomy and Astrophysics – Astrophysics – Galaxy Astrophysics
Scientific paper
2010-08-22
JCAP08 (2011) 016
Astronomy and Astrophysics
Astrophysics
Galaxy Astrophysics
8 pages and 6 figures
Scientific paper
10.1088/1475-7516/2011/08/016
Matos, Guzman and Nunez proposed a model of galactic halo based on an exponential-potential scalar field that could induce a rotation curve that is constant for all radii. We demonstrate that with suitable boundary conditions, such scalar field dark matter (SDM) can not only produce the observed constant rotation curve at large radius but also give rise to the correct power-law scaling near the galactic core region. This solves the existing cusp-core problem faced by the conventional cold dark matter (CDM) model.
Chen Pisin
Su Kung-Yi
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