Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Intrinsic angular momentum in general relativity   There are several definitions of the notion of angular momentum in general
relativity. However non of them can be said to capture the physical notion of
intrinsic angular momentum of the sources in the presence of gravitational
radiation. We present a definition which is appropriate for the description of
intrinsic angular momentum in radiative spacetimes. This notion is required in
calculations involving radiation of angular momentum, as for example is
expected in binary coalescence of black holes.

1
The categories of this paper are: cs
9
The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn
25
The categories of this paper are: patt-sol
10
The categories of this paper are: q-bio
3
The categories of this paper are: physics
29
The categories of this paper are: funct-an
19
The categories of this paper are: eess
12
The categories of this paper are: nucl-th
34
The categories of this paper are: chem-ph
0
The categories of this paper are: hep-ph
2
The categories of this paper are: math
14
The categories of this paper are: math-ph
36
The categories of this paper are: cmp-lg
28
The categories of this paper are: alg-geom
18
The categories of this paper are: econ