Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Thermal instability of an optically thin dusty plasma   We investigate the role of thermal instability, arising from radiative
cooling of an optically thin, dusty plasma, by linear stability analysis. The
corresponding isobaric stability condition for condensation mode is found to be
modified significantly by the degree of ionization and concentration of finite
sized, relatively heavy, and negatively charged dust particles. It has been
shown that though the fundamental wave mode is similar in nature to the one in
absence of dust particles, a new dust-wave mode can propagate in such a plasma.
It is conjectured that the presence of negatively charged dust particles may
considerably affect the stability of various astrophysical structures against
thermal instability, which can not be explained with the help of gravitational
instability.

20
The categories of this paper are: acc-phys
35
The categories of this paper are: mtrl-th
8
The categories of this paper are: hep-ex
25
The categories of this paper are: patt-sol
23
The categories of this paper are: solv-int
18
The categories of this paper are: econ
30
The categories of this paper are: q-alg
9
The categories of this paper are: nlin
21
The categories of this paper are: adap-org
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The categories of this paper are: dg-ga
4
The categories of this paper are: cond-mat
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The categories of this paper are: alg-geom
2
The categories of this paper are: math
10
The categories of this paper are: q-bio
33
The categories of this paper are: plasm-ph
36
The categories of this paper are: cmp-lg