Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Matching of analytical and numerical solutions for neutron stars of
  arbitrary rotation   We demonstrate the results of an attempt to match the two-soliton analytical
solution with the numerically produced solutions of the Einstein field
equations, that describe the spacetime exterior of rotating neutron stars, for
arbitrary rotation. The matching procedure is performed by equating the first
four multipole moments of the analytical solution to the multipole moments of
the numerical one. We then argue that in order to check the effectiveness of
the matching of the analytical with the numerical solution we should compare
the metric components, the radius of the innermost stable circular orbit
($R_{ISCO}$), the rotation frequency $\Omega\equiv\frac{d\phi}{dt}$ and the
epicyclic frequencies $\Omega_{\rho},\;\Omega_z$. Finally we present some
results of the comparison.

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The categories of this paper are: q-alg
36
The categories of this paper are: cmp-lg
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The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci
3
The categories of this paper are: physics
14
The categories of this paper are: math-ph
7
The categories of this paper are: hep-th
22
The categories of this paper are: chao-dyn
25
The categories of this paper are: patt-sol
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The categories of this paper are: q-bio
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The categories of this paper are: eess
20
The categories of this paper are: acc-phys
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The categories of this paper are: stat
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The categories of this paper are: comp-gas
15
The categories of this paper are: nucl-ex
23
The categories of this paper are: solv-int