6533b7d1fe1ef96bd125d94c
RESEARCH PRODUCT
Cores and Cusps in Warm Dark Matter Halos
Neal DalalFrancisco Villaescusa-navarrosubject
PhysicsCosmology and Nongalactic Astrophysics (astro-ph.CO)FOS: Physical sciencesAstronomy and AstrophysicsAstrophysicsAstrophysics::Cosmology and Extragalactic AstrophysicsGalaxyCore (optical fiber)Large coreWarm dark matterHaloSurface brightnessAstrophysics::Galaxy AstrophysicsAstrophysics - Cosmology and Nongalactic Astrophysicsdescription
The apparent presence of large core radii in Low Surface Brightness galaxies has been claimed as evidence in favor of warm dark matter. Here we show that WDM halos do not have cores that are large fractions of the halo size: typically, r_core/r_200 < 0.001. This suggests an astrophysical origin for the large cores observed in these galaxies, as has been argued by other authors.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2011-03-14 |