Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Frame dragging in black hole-pulsar binaries   The discovery of frame-dragging effects in binary pulsar timing experiments
requires a compact companion with sufficiently large spin. A pulsar orbiting a
fast rotating black hole could provide an appropriate test system. In this
paper we address questions concerning the identification of a black hole
companion in such a system, the measurability of the frame dragging caused by
the rotation of the black hole, and the measurability of the quadrupole moment,
which would prove the presence of a Kerr black hole.

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The categories of this paper are: funct-an
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The categories of this paper are: comp-gas
2
The categories of this paper are: math
17
The categories of this paper are: q-fin
11
The categories of this paper are: hep-lat
37
The categories of this paper are: supr-con
3
The categories of this paper are: physics
18
The categories of this paper are: econ
33
The categories of this paper are: plasm-ph
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The categories of this paper are: nlin
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The categories of this paper are: atom-ph
7
The categories of this paper are: hep-th
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The categories of this paper are: solv-int
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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