Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Accretion of supersonic winds onto black holes in 3D: stability of the
  shock cone   Using numerical simulations we present the accretion of supersonic winds onto
a rotating black hole in three dimensions. We study five representative
directions of the wind with respect to the axis of rotation of the black hole
and focus on the evolution and stability of the high density shock cone that is
formed during the process. We explore both, the regime in which the shock cone
is expected to be stable in order to confirm previous results obtained with two
dimensional simulations, and the regime in which the shock cone is expected to
show a flip-flop type of instability. The methods used to attempt triggering
the instability were first the accumulation of numerical errors and second the
explicit application of a perturbation on the velocity field after the
shock-cone was formed. The result is negative, that is, we did not find the
flip-flop instability within the parameter space we explored, which includes
cases that are expected to be unstable.

19
The categories of this paper are: eess
2
The categories of this paper are: math
9
The categories of this paper are: nlin
29
The categories of this paper are: funct-an
11
The categories of this paper are: hep-lat
28
The categories of this paper are: alg-geom
10
The categories of this paper are: q-bio
26
The categories of this paper are: bayes-an
35
The categories of this paper are: mtrl-th
15
The categories of this paper are: nucl-ex
21
The categories of this paper are: adap-org
18
The categories of this paper are: econ
4
The categories of this paper are: cond-mat
16
The categories of this paper are: stat
30
The categories of this paper are: q-alg
23
The categories of this paper are: solv-int