Cold Dark Matter Halos Must Burn

Details Cold Dark Matter Halos Must Burn Cold Dark Matter Halos Must Burn

2001-06-14

arxiv.org/abs/astro-ph/0106251v2

Astronomy and Astrophysics

Astrophysics

2 figures, definitive version to appear in the Proceedings of the MPA/ESO/MPE/USM Joint Conference: "Lighthouses of the Univer

Scientific paper

10.1007/10856495_82

High-quality optical rotation curves for a sample of low-luminosity spirals evidence that the dark halos around galaxies are inconsistent with the output of proper CDM simulations. In fact, dark halos enveloping stellar disks are structures with approximately a constant density out to the optical edges. This is in strong disagreement with the characteristic rho(r) ~ r^(-1.5) CDM regime and severely challenges the "standard" CDM theory, also because the halo density appears to be heated up, at gross variance with the hierarchical evolution of collision-free particles.

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