Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Solution for "geodesic" motion of a Schwarzschild black hole along a
  magnetic field in AdS2 x S2 space-time   The exact solution of Einstein - Maxwell equations for a Schwarzschild black
hole immersed in the static spatially homogeneous AdS${}^2\times\mathbb{S}^2$
space-time of Bertotti-Robinson magnetic universe is presented. In this
solution, the black hole possesses a finite initial boost in the direction of
the magnetic field and performs a "geodesic" oscillating motion interacting
with the background gravitational and electromagnetic fields.

6
The categories of this paper are: astro-ph
32
The categories of this paper are: atom-ph
26
The categories of this paper are: bayes-an
15
The categories of this paper are: nucl-ex
33
The categories of this paper are: plasm-ph
4
The categories of this paper are: cond-mat
20
The categories of this paper are: acc-phys
17
The categories of this paper are: q-fin
14
The categories of this paper are: math-ph
8
The categories of this paper are: hep-ex
29
The categories of this paper are: funct-an
30
The categories of this paper are: q-alg
28
The categories of this paper are: alg-geom
19
The categories of this paper are: eess
31
The categories of this paper are: ao-sci
16
The categories of this paper are: stat