CDM in LSB Galaxies: Toward the Optimal Halo Profile

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Low Surface Brightness (LSB) galaxies are dominated by dark matter. High-resolution rotation curves suggest that their total mass-density distributions are dominated by constant density cores rather than the steep and cuspy distributions found in Cold Dark Matter (CDM) simulations. The data are best described by a model with a soft core with an inner power-law mass-density slope alpha = 0.2 +/- 0.2. However no single universal halo profile provides an adequate description of the data. The observed mass profiles appear to be inconsistent with LambdaCDM.
Proceedings IAU 220 "Dark Matter in Galaxies", Eds. S. Ryder et al

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Astrophysics

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http://salesiana.dossiersoluciones.com/handle/123456789/6952

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/astro-ph/0311117
 http://arxiv.org/abs/astro-ph/0311117

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arXiv