Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Distribution of mass in galaxy cluster CL0024 and the particle mass of
  dark matter   We study in details the distribution of mass in galaxy cluster CL0024+1654
inferred using the method of strong gravitational lensing by Tyson {\it et al.}
(1998). We show that a linear correlation exists between total, visible and
dark matter distributions on log-log scale with consistent coefficients. The
shape and parameters of log-log-linear correlation are not affected
significantly whether one uses projected or volume mass densities but is
consistent with $\kappa=2-5$ visible/dark ratio. We also show and analyze in
depth so called alignment properties of the above-mentioned profiles. We show
that log-log-linear correlation and alignments can all be understood in terms
of thermodynamic/hydrodynamic equilibrium with gravitational potential growing
almost linearly in the region of interest. We then analyze the hypothesis of
thermal equilibrium on the base of the existing data about CL0024 cluster. If
the presence of log-log-linear correlation and alignments were interpreted
thermodynamically, this would indicate the mass of the dark matter particle 2-5
times smaller than that of atomic hydrogen, thus giving range for the mass of
dark matter particle between 200MeV and 1000MeV.

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The categories of this paper are: chao-dyn
16
The categories of this paper are: stat
34
The categories of this paper are: chem-ph
23
The categories of this paper are: solv-int
1
The categories of this paper are: cs
2
The categories of this paper are: math
14
The categories of this paper are: math-ph
9
The categories of this paper are: nlin
32
The categories of this paper are: atom-ph
31
The categories of this paper are: ao-sci
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The categories of this paper are: eess
3
The categories of this paper are: physics
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The categories of this paper are: econ
4
The categories of this paper are: cond-mat
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The categories of this paper are: comp-gas
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The categories of this paper are: patt-sol