Magneto-thermal condensation modes including the effects
of charged dust particles.
Monthly Notices of the Royal Astronomical Society, 385 (2).
We study thermal instability in a magnetized and partially ionized plasma with
charged dust particles. Our linear analysis shows that the growth rate of the unstable
modes in the presence of dust particles strongly depends on the ratio of the cooling
rate and the modified dust-cyclotron frequency. If the cooling rate is less than the modified
dust-cyclotron frequency, then growth rate of the condensation modes does not
modify due to the existence of the charged dust particles. But when the cooling rate
is greater than (or comparable to) the modified dust-cyclotron frequency, the growth
rate of unstable modes increases because of the dust particles. Also, wavenumber of
the perturbations corresponding to the maximum growth rate shifts to the smaller
values (larger wavelengths) as the cooling rate becomes larger than the modified dustcyclotron
frequency. We show that growth rate of the condensation modes increases
with the electrical charge of the dust particles.
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