Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Density profiles of dark matter halos with anisotropic velocity tensors   We present density profiles, that are solutions of the spherical Jeans
equation, derived under the following two assumptions: (i) the coarse grained
phase-density follows a power-law of radius, rho/(sigma^3) proportional to
r^{-alpha}, and (ii) the velocity anisotropy parameter is given by the relation
beta_a(r) = beta_1 + 2 beta_2 {(r/r_*)/(1+(r/r_*)^2)} where beta_1, beta_2 are
parameters and r_* equals twice the virial radius, r_{vir}, of the system.
These assumptions are well motivated by the results of N-body simulations.
Density profiles have increasing logarithmic slopes gamma, defined by gamma = -
{(d ln rho)/(d ln r)}. The values of gamma at r = 10^{-2.5}r_{vir}, a distance
where the systems could be resolved by large N-body simulations, lie in the
range 1. - 1.6. These inner values of gamma increase for increasing beta_1 and
for increasing concentration of the system. On the other hand, slopes at r =
r_{vir} lie in the range 2.42 - 3.82. A model density profile that fits well
the results at radial distances between 10^{-3}r_{vir} and r_{vir} and connects
kinematic and structural characteristics of spherical systems is described.

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The categories of this paper are: chem-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: quant-ph
2
The categories of this paper are: math
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The categories of this paper are: funct-an
5
The categories of this paper are: gr-qc
1
The categories of this paper are: cs
3
The categories of this paper are: physics
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The categories of this paper are: math-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: q-alg
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The categories of this paper are: solv-int
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The categories of this paper are: patt-sol
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The categories of this paper are: econ
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The categories of this paper are: atom-ph
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The categories of this paper are: chao-dyn