Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Accelerating and rotating black holes   An exact solution of Einstein's equations which represents a pair of
accelerating and rotating black holes (a generalised form of the spinning
C-metric) is presented. The starting point is a form of the Plebanski-Demianski
metric which, in addition to the usual parameters, explicitly includes
parameters which describe the acceleration and angular velocity of the sources.
This is transformed to a form which explicitly contains the known special cases
for either rotating or accelerating black holes. Electromagnetic charges and a
NUT parameter are included, the relation between the NUT parameter $l$ and the
Plebanski-Demianski parameter $n$ is given, and the physical meaning of all
parameters is clarified. The possibility of finding an accelerating NUT
solution is also discussed.

26
The categories of this paper are: bayes-an
35
The categories of this paper are: mtrl-th
37
The categories of this paper are: supr-con
21
The categories of this paper are: adap-org
32
The categories of this paper are: atom-ph
33
The categories of this paper are: plasm-ph
4
The categories of this paper are: cond-mat
31
The categories of this paper are: ao-sci
8
The categories of this paper are: hep-ex
3
The categories of this paper are: physics
13
The categories of this paper are: quant-ph
30
The categories of this paper are: q-alg
22
The categories of this paper are: chao-dyn
2
The categories of this paper are: math
12
The categories of this paper are: nucl-th
0
The categories of this paper are: hep-ph