Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Angular momentum transfer to a star by gravitational waves   Interaction of a stochastic background of gravitational radiation with
celestial systems changes their dynamical elements in a random manner and give
rise to secular changes in time. In this spirit we study the angular momentum
transfer from a random background of radiation either to a rotating star or to
an oscillating one. The angular momentum transferred to such objects by a
continuous plane wave is proportional to time, $t$, and by an stochastic
background is proportional to $t^{1/2}$.

16
The categories of this paper are: stat
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The categories of this paper are: eess
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The categories of this paper are: q-fin
18
The categories of this paper are: econ
31
The categories of this paper are: ao-sci
5
The categories of this paper are: gr-qc
21
The categories of this paper are: adap-org
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The categories of this paper are: nucl-th
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The categories of this paper are: chao-dyn
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The categories of this paper are: cs
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The categories of this paper are: nucl-ex
9
The categories of this paper are: nlin
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The categories of this paper are: mtrl-th
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The categories of this paper are: cmp-lg
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The categories of this paper are: comp-gas
25
The categories of this paper are: patt-sol