Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Rescuing the intracluster medium of NGC 5813   We use recent X-ray observations of the intracluster medium (ICM) of the
galaxy group NGC 5813 to confront theoretical studies of ICM thermal evolution
with the newly derived ICM properties. We argue that the ICM of the cooling
flow galaxy group NGC 5813 is more likely to be heated by mixing of post-shock
jets' gas residing in hot bubbles with the ICM, than by shocks or
turbulent-heating. Shocks thermalize only a small fraction of their energy in
the inner regions of the cooling flow; in order to adequately heat the inner
part of the ICM, they would overheat the outer regions by a large factor,
leading to its ejection from the group. Heating by mixing, that was found to be
much more efficient than turbulent-heating and shocks-heating, hence, rescues
the outer ICM of NGC 5813 from its predestined fate according to cooling flow
feedback scenarios that are based on heating by shocks.

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The categories of this paper are: bayes-an
3
The categories of this paper are: physics
2
The categories of this paper are: math
29
The categories of this paper are: funct-an
36
The categories of this paper are: cmp-lg
18
The categories of this paper are: econ
5
The categories of this paper are: gr-qc
13
The categories of this paper are: quant-ph
17
The categories of this paper are: q-fin
8
The categories of this paper are: hep-ex
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The categories of this paper are: alg-geom
11
The categories of this paper are: hep-lat
10
The categories of this paper are: q-bio
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The categories of this paper are: atom-ph
35
The categories of this paper are: mtrl-th
4
The categories of this paper are: cond-mat