Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Influence of Alfven waves on the Thermal Instability in the Interstellar
  Medium   The effect of Alfv\'en waves on the thermal instability of the Interstellar
Medium (ISM) is investigated both analytically and numerically. A stability
analysis of a finite amplitude circularly polarized Alfv\'en wave propagating
parallel to an ambient magnetic field in a thermally unstable gas at thermal
equilibrium is performed, leading to a dispersion relation which depends on 3
parameters, namely the square ratio of the sonic and Alfv\'en velocities
($\beta$), the wave amplitude and the ratio between the wave temporal period
and the cooling time. Depending on the values of these 3 parameters, the
Alfv\'en waves can stabilize the large-scale perturbations, destabilize those
whose wavelength is a few times the Alfv\'en wavelength $\lambda_{AW}$ or leave
the growth rate of the short scales unchanged. In order to investigate the
non-linear regime, two different numerical experiments are performed in a slab
geometry. (TBC)

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The categories of this paper are: hep-ex
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The categories of this paper are: ao-sci
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The categories of this paper are: cond-mat
32
The categories of this paper are: atom-ph
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The categories of this paper are: acc-phys
24
The categories of this paper are: dg-ga
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The categories of this paper are: alg-geom
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The categories of this paper are: cmp-lg
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The categories of this paper are: econ
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The categories of this paper are: bayes-an
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The categories of this paper are: eess
29
The categories of this paper are: funct-an
30
The categories of this paper are: q-alg
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The categories of this paper are: nlin
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The categories of this paper are: quant-ph
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The categories of this paper are: q-bio