Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Dynamics of Conductive/Cooling Fronts: Cloud Implosion and Thermal
  Solitons   We investigate the evolution of interfaces among phases of the interstellar
medium with different temperature. It is found that, for some initial
conditions, the dynamical effects related to conductive fronts are very
important even if radiation losses, which tend to decelerate the front
propagation, are taken into account. We have also explored the consequences of
the inclusion of shear and bulk viscosity, and we have allowed for saturation
of the kinetic effects. Numerical simulations of a cloud immersed in a hot
medium have been performed; depending on the ratio of conductive to dynamical
time, the density is increased by a huge factor and the cloud may become
optically thick. Clouds that are highly compressed are able to stop the
evaporation process even if their initial size is smaller than the Field
length. In addition to the numerical approach, the time dependent evolution has
been studied also analytically. Simple techniques have been applied to the
problem in order to study the transition stages to a stationary state. The
global properties of the solution for static and steady fronts and useful
relations among the various physical variables are derived; a mechanical
analogy is often used to clarify the physics of the results. It is demonstrated
that a class of soliton-like solutions are admitted by the hydrodynamical
equations appropriate to describe the conduction/cooling fronts (in the
inviscid case) that do not require a heat flux at the boundaries. Some
astrophysical consequences are indicated along with some possible applications
to the structure of the Galactic ISM and to extragalactic objects.

23
The categories of this paper are: solv-int
28
The categories of this paper are: alg-geom
30
The categories of this paper are: q-alg
32
The categories of this paper are: atom-ph
26
The categories of this paper are: bayes-an
16
The categories of this paper are: stat
35
The categories of this paper are: mtrl-th
1
The categories of this paper are: cs
37
The categories of this paper are: supr-con
33
The categories of this paper are: plasm-ph
24
The categories of this paper are: dg-ga
14
The categories of this paper are: math-ph
4
The categories of this paper are: cond-mat
8
The categories of this paper are: hep-ex
12
The categories of this paper are: nucl-th
0
The categories of this paper are: hep-ph