Solving the Cusp-Core Problem with a Novel Scalar Field Dark Matter
Astrophysics of Galaxies
2011-09-05 v2 Cosmology and Nongalactic Astrophysics
High Energy Physics - Phenomenology
Abstract
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.
Keywords
Cite
@article{arxiv.1008.3717,
title = {Solving the Cusp-Core Problem with a Novel Scalar Field Dark Matter},
author = {Kung-Yi Su and Pisin Chen},
journal= {arXiv preprint arXiv:1008.3717},
year = {2011}
}
Comments
8 pages and 6 figures