Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Gravity wave and model-independent axion   In this short comment, we notice that the model-independent axion
contribution to the graviton mass at just outside the Schwarzschild radius is
completely negligible in GW150914. The model-independent axion contribution to
the graviton mass at the order $10^{-22}\,$eV might be possible for merger of
black holes of mass of order $2\times 10^{14}\,$kg.

34
The categories of this paper are: chem-ph
37
The categories of this paper are: supr-con
30
The categories of this paper are: q-alg
4
The categories of this paper are: cond-mat
26
The categories of this paper are: bayes-an
15
The categories of this paper are: nucl-ex
32
The categories of this paper are: atom-ph
36
The categories of this paper are: cmp-lg
21
The categories of this paper are: adap-org
14
The categories of this paper are: math-ph
3
The categories of this paper are: physics
33
The categories of this paper are: plasm-ph
17
The categories of this paper are: q-fin
16
The categories of this paper are: stat
27
The categories of this paper are: comp-gas
2
The categories of this paper are: math