Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Note on Gravitational Brownian Motion   Chandrasekhar's theory of stellar encounters predicts a dependence of the
Brownian motion of a massive particle on the velocity distribution of the
perturbing stars. One consequence is that the expectation value of the massive
object's kinetic energy can be different from that of the perturbers. This
effect is shown to be modest however, and substantially smaller than claimed in
a recent study based on a more approximate treatment of the encounter
equations.

29
The categories of this paper are: funct-an
10
The categories of this paper are: q-bio
27
The categories of this paper are: comp-gas
35
The categories of this paper are: mtrl-th
36
The categories of this paper are: cmp-lg
21
The categories of this paper are: adap-org
7
The categories of this paper are: hep-th
28
The categories of this paper are: alg-geom
14
The categories of this paper are: math-ph
34
The categories of this paper are: chem-ph
8
The categories of this paper are: hep-ex
19
The categories of this paper are: eess
11
The categories of this paper are: hep-lat
12
The categories of this paper are: nucl-th
15
The categories of this paper are: nucl-ex
17
The categories of this paper are: q-fin