| Issue |
|
EAS Publications Series
Volume 20,
2006
Mass Profiles and Shapes of Cosmological Structures
|
|
Page(s)
|
|
11 - 14 |
| DOI |
|
10.1051/eas:2006037 |
| Published online |
|
19 May 2006 |
|
Mass Profiles and Shapes of Cosmological Structures
G.A. Mamon, F. Combes, C. Deffayet and B. Fort (eds)
EAS Publications Series, 20 (2006) 11-14DOI: 10.1051/eas:2006037
Structure of Dark Matter Halos from Hierarchical Clustering
T. Fukushige University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo
153-8902, Japan
Abstract
We investigated the structure of the dark matter halo formed in the
cold dark matter scenarios by
N-body simulations with parallel
treecode on GRAPE cluster systems (Fukushige
et al. 2004, ApJ,
606, 625). We simulated 8 halos with the mass of
to
in the SCDM and LCDM
model using up to 30 million particles. With the resolution of our
simulations, the density profile is reliable down to 0.2 percent of
the virial radius. Our results show that the slope of inner cusp
within 1 percent virial radius is shallower than -1.5, and the
radius where the shallowing starts exhibits run-to-run variation.
© EAS, EDP Sciences 2006
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