Universal properties of dark matter halos.
- Boyarsky A Ecole Polytechnique Fédérale de Lausanne, FSB/ITP/LPPC, BSP 720, CH-1015, Lausanne, Switzerland.
- Neronov A
- Ruchayskiy O
- Tkachev I
- 2010-09-28
Published in:
- Physical review letters. - 2010
English
We discuss the universal relation between density and size of observed dark matter halos that was recently shown to hold on a wide range of scales, from dwarf galaxies to galaxy clusters. Predictions of cold dark matter (ΛCDM) N-body simulations are consistent with this relation. We demonstrate that this property of ΛCDM can be understood analytically in the secondary infall model. Qualitative understanding given by this model provides a new way to predict which deviations from ΛCDM or large-scale modifications of gravity can affect universal behavior and, therefore, to constrain them observationally.
- Language
-
- English
- Open access status
- green
- Identifiers
-
- DOI 10.1103/PhysRevLett.104.191301
- PMID 20866958
- Persistent URL
- https://sonar.ch/global/documents/204266
Statistics
Document views: 31
File downloads:
- Full-text: 0