Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Viscosity in cosmological simulations of clusters of galaxies   The physics of the intracluster medium, in particular the values for the
thermal conductivity and the viscosity are largely unknown and subject to an
ongoing debate. Here, we study the effect of viscosity on the thermal state of
the intracluster medium using three-dimensional cosmological simulations of
structure formation. It is shown that viscosity, provided it is not too far off
from the unmagnetised Spitzer value, has a significant effect on cluster
profiles. In particular, it aids in heating the cool cores of clusters. The
central cooling time of the most massive clusters in our simulation is
increased by more than an order of magnitude. In large clusters, viscous
heating may help to establish an entropy floor and to prevent a cooling
catastrophe.

31
The categories of this paper are: ao-sci
33
The categories of this paper are: plasm-ph
21
The categories of this paper are: adap-org
15
The categories of this paper are: nucl-ex
1
The categories of this paper are: cs
14
The categories of this paper are: math-ph
12
The categories of this paper are: nucl-th
34
The categories of this paper are: chem-ph
22
The categories of this paper are: chao-dyn
17
The categories of this paper are: q-fin
19
The categories of this paper are: eess
35
The categories of this paper are: mtrl-th
2
The categories of this paper are: math
26
The categories of this paper are: bayes-an
23
The categories of this paper are: solv-int
8
The categories of this paper are: hep-ex