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Galactic halos in cosmology with long-range scalar DM interaction
Article first published online: 24 FEB 2010
Copyright © 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Annalen der Physik
Volume 19, Issue 3-5, pages 351–354, April 2010
How to Cite
Hellwing, W.A. (2010), Galactic halos in cosmology with long-range scalar DM interaction. Ann. Phys., 19: 351–354. doi: 10.1002/andp.201010445
- Issue published online: 25 MAR 2010
- Article first published online: 24 FEB 2010
- Manuscript Accepted: 4 JAN 2010
- Manuscript Received: 3 NOV 2009
- structure formation;
- string theory;
- dark matter.
Based on a set of cosmological N-body simulations we analyze properties of the dark matter (DM) haloes in a galaxy mass range (1011–1013 h-1Modot) in modified ΛCDM cosmology with additional dynamically screened scalar interactions in DM sector. Our simulations show that scalar interactions support picture of the Island Universe. Rapid structure formation processes are shifted into higher redshifts resulting in a much smaller accretion and merging rates for galactic haloes at low redshifts. Finally, we present how this “fifth” force affects halo properties, like density profile, triaxiality, ellipticities and the spin parameter.