Inner Structure of Dark Matter Halos

1 January 2004

journal article
Published by Cambridge University Press (CUP) in Symposium - International Astronomical Union

Vol. 220, 99-100
https://doi.org/10.1017/s0074180900182932

Abstract

We investigate 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, Kawai, Makino 2003). We simulated 8 halos with the mass of 4.4 × 10¹⁴M_⊙ to 1.6 × 10¹⁵M_⊙ 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, which means the innermost profile is not universal.

Keywords

This publication has 3 references indexed in Scilit:

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