Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Gravitational field of a rotating gravitational dyon   We have obtained the most general solution of the Einstein vacuum equation
for the axially symmetric stationary metric in which both the
  Hamilton-Jacobi equation for particle motion and the Klein - Gordon equation
are separable. It can be interpreted to describe the gravitational field of a
rotating dyon, a particle endowed with both gravoelectric (mass) and
gravomagnetic (NUT parameter) charge. Further, there also exists a duality
relation between the two charges and the radial and the polar angle coordinates
which keeps the solution invariant. The solution can however be transformed
into the known Kerr - NUT solution indicating its uniqueness under the
separability of equations of motion.

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The categories of this paper are: chem-ph
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The categories of this paper are: physics
2
The categories of this paper are: math
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The categories of this paper are: bayes-an
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The categories of this paper are: q-bio
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The categories of this paper are: adap-org
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The categories of this paper are: cs
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The categories of this paper are: supr-con
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The categories of this paper are: acc-phys
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The categories of this paper are: q-fin
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The categories of this paper are: cmp-lg
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The categories of this paper are: math-ph
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The categories of this paper are: eess
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The categories of this paper are: hep-lat
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The categories of this paper are: dg-ga
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The categories of this paper are: stat