Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Structure and Dynamics of Cold Dark Matter Halos   We investigate the internal structure of cold dark matter halos using high
resolution N-body simulations. As the mass and force resolution are increased,
halo density profiles become steeper, asymptoting to a slope of $\sim -4/3$ in
the central regions and may not have converged to a unique result. At our
highest resolution we have nearly 3 million particles within the virial radius,
$R_{200}$, and force softening that is $\sim 0.2% R_{200}$. This resolution has
also allowed us to resolve a large part of the overmerging problem - we find
over 1000 surviving dark halos orbiting within a single cluster potential.
These data have given us unprecedented insights into the dynamics and structure
of ``halos within halos'', allowing us for the first time, to compare the
distribution of dark matter with observations of galaxies in clusters.

13
The categories of this paper are: quant-ph
1
The categories of this paper are: cs
31
The categories of this paper are: ao-sci
9
The categories of this paper are: nlin
11
The categories of this paper are: hep-lat
34
The categories of this paper are: chem-ph
4
The categories of this paper are: cond-mat
21
The categories of this paper are: adap-org
20
The categories of this paper are: acc-phys
2
The categories of this paper are: math
10
The categories of this paper are: q-bio
16
The categories of this paper are: stat
12
The categories of this paper are: nucl-th
19
The categories of this paper are: eess
18
The categories of this paper are: econ
24
The categories of this paper are: dg-ga