Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Different thermodynamics of self-gravitating systems and discussions for
  some observations and simulations   Our previous works have shown the statistical mechanics of self-gravitating
system. In this paper, we will show its thermodynamics and compare our results
with observations and simulations. We propose that our statistical mechanics
can be based on ergodicity breaking and Boltzmann entropy, and its assumptions
do not contradict with the reality. With the principle of statistical
mechanics, we will show our definition of temperature and then the capacity of
self-gravitating systems. We find that the gravothermal catastrophe may be a
special case of our theory. Our results also provide new explanations for the
density profiles of observations and numerical simulations, especially we think
that the non-universal density distribution in the simulations of
dissipationless collapse is not caused by the different initial collapse
factor. We will also discuss about the core-cusp problem.

1
The categories of this paper are: cs
22
The categories of this paper are: chao-dyn
20
The categories of this paper are: acc-phys
37
The categories of this paper are: supr-con
29
The categories of this paper are: funct-an
24
The categories of this paper are: dg-ga
23
The categories of this paper are: solv-int
25
The categories of this paper are: patt-sol
34
The categories of this paper are: chem-ph
27
The categories of this paper are: comp-gas
30
The categories of this paper are: q-alg
9
The categories of this paper are: nlin
26
The categories of this paper are: bayes-an
17
The categories of this paper are: q-fin
35
The categories of this paper are: mtrl-th
19
The categories of this paper are: eess