Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Frequently Asked Questions on the Luminosity--Temperature relation in
  Groups and Clusters   Efforts to understand the deviation of the L--T relation from a simple
scaling law valid for clusters and groups have triggered a number of
interesting studies on the subject. Techniques and approaches differ widely but
most works agree on the important role played by gas cooling and heating
sources like AGNs and SNe. Observations set useful constraints on the evolution
of the intracluster medium (ICM): a 100KeV/cm^2 entropy floor in the core of
groups and about 5--15% of baryons being converted into stars. However,
essential details like the nature of the dominant heating mechanism and the
quantitative importance of cooling still need to be addressed. I suggest that a
new generation of high resolution N-body simulations and a quantitative
comparison of results between different approaches is required to improve
results and increase our understanding of the problem.

20
The categories of this paper are: acc-phys
11
The categories of this paper are: hep-lat
0
The categories of this paper are: hep-ph
32
The categories of this paper are: atom-ph
2
The categories of this paper are: math
37
The categories of this paper are: supr-con
30
The categories of this paper are: q-alg
13
The categories of this paper are: quant-ph
7
The categories of this paper are: hep-th
34
The categories of this paper are: chem-ph
16
The categories of this paper are: stat
4
The categories of this paper are: cond-mat
35
The categories of this paper are: mtrl-th
33
The categories of this paper are: plasm-ph
29
The categories of this paper are: funct-an
9
The categories of this paper are: nlin