Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Jet/environment interactions in low-power radio galaxies   The interactions between low-power radio galaxies and their environments are
thought to play a crucial role in supplying energy to offset cooling in the
centres of groups and clusters. Such interactions are also important in
determining large-scale radio structures and radio-source dynamics. I will
discuss new XMM-Newton observations of the hot-gas environments of a
representative sample of nine FRI radio galaxies, which show strong evidence
for the importance of such interactions (including evidence for heating) and
provide important new constraints on source dynamics and particle content. In
particular I will show that the widely discussed apparent imbalance between the
internal lobe pressure available from relativistic electrons and magnetic field
and the external pressure of hot gas correlates with radio structure, so that
naked jets require a large contribution from non-radiating particles, whereas
lobed sources do not. This may provide the first direct observational evidence
that entrainment of the ICM supplies the missing pressure.

27
The categories of this paper are: comp-gas
0
The categories of this paper are: hep-ph
15
The categories of this paper are: nucl-ex
8
The categories of this paper are: hep-ex
12
The categories of this paper are: nucl-th
4
The categories of this paper are: cond-mat
30
The categories of this paper are: q-alg
2
The categories of this paper are: math
18
The categories of this paper are: econ
25
The categories of this paper are: patt-sol
11
The categories of this paper are: hep-lat
23
The categories of this paper are: solv-int
5
The categories of this paper are: gr-qc
31
The categories of this paper are: ao-sci
22
The categories of this paper are: chao-dyn
34
The categories of this paper are: chem-ph