Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Exact solution of the relativistic magnetohydrodynamic equations in the
  background of a plane gravitational wave with combined polarization   We obtain an exact solution of the self-consistent relativistic
magnetohydrodynamic equations for an anisotropic magnetoactive plasma in the
background of a plane gravitational wave metric (PGW) with an arbitrary
polarization. It is shown that, in the linear approximation in the
gravitational wave amplitude, only the $\mathbf{e_+}$ polarization of the PGW
interacts with a magnetoactive plasma.

20
The categories of this paper are: acc-phys
3
The categories of this paper are: physics
33
The categories of this paper are: plasm-ph
8
The categories of this paper are: hep-ex
0
The categories of this paper are: hep-ph
30
The categories of this paper are: q-alg
18
The categories of this paper are: econ
28
The categories of this paper are: alg-geom
27
The categories of this paper are: comp-gas
17
The categories of this paper are: q-fin
12
The categories of this paper are: nucl-th
34
The categories of this paper are: chem-ph
19
The categories of this paper are: eess
10
The categories of this paper are: q-bio
29
The categories of this paper are: funct-an
7
The categories of this paper are: hep-th