Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Fitting functions for dark matter density profiles   We present a unified parameterization of the fitting functions suitable for
density profiles of dark matter haloes or elliptical galaxies. A notable
feature is that the classical Einasto profile appears naturally as the
continuous limiting case of the cored subfamily amongst the double power-law
profiles of Zhao (1996). Based on this, we also argue that there is basically
no qualitative difference between halo models well-fitted by the Einasto
profile and the standard NFW model. This may even be the case quantitatively
unless the resolutions of simulations and the precisions of fittings are
sufficiently high to make meaningful distinction possible.

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The categories of this paper are: math
14
The categories of this paper are: math-ph
17
The categories of this paper are: q-fin
35
The categories of this paper are: mtrl-th
33
The categories of this paper are: plasm-ph
5
The categories of this paper are: gr-qc
13
The categories of this paper are: quant-ph
24
The categories of this paper are: dg-ga
26
The categories of this paper are: bayes-an
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The categories of this paper are: acc-phys
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The categories of this paper are: hep-ex
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The categories of this paper are: hep-lat
34
The categories of this paper are: chem-ph
23
The categories of this paper are: solv-int
0
The categories of this paper are: hep-ph
36
The categories of this paper are: cmp-lg