Cores and cusps in warm dark matter halos

Francisco Villaescusa-Navarro, Neal Dalal

Research output: Contribution to journalArticlepeer-review


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, rcore/r200 ≲ 10-3. This suggests an astrophysical origin for the large cores observed in these galaxies, as has been argued by other authors.

Original languageEnglish (US)
Article number024
JournalJournal of Cosmology and Astroparticle Physics
Issue number3
StatePublished - Mar 2011
Externally publishedYes


  • dark matter simulations
  • dark matter theory
  • dwarfs galaxies
  • rotation curves of galaxies

ASJC Scopus subject areas

  • Astronomy and Astrophysics


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