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CDM in LSB Galaxies: Toward the Optimal Halo Profile

Published online by Cambridge University Press:  26 May 2016

W. J. G de Blok
W. J. G de Blok*
Affiliation:
Department of Physics and Astronomy, Cardiff University, 5 the Parade, Cardiff, CF24 3YB, UK

Abstract

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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 α = 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 ACDM.

Type
Part 3: Central Density Cusps, Thin Disks, and Dark Halo Substructure
Information
Symposium - International Astronomical Union , Volume 220: Dark Matter in Galaxies , 2004 , pp. 69 - 76
Copyright
Copyright © Astronomical Society of the Pacific 2004 

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