The role of Kelvin–Helmholtz instability in dusty and partially ionized outflows |
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Authors: | Mohsen Shadmehri Turlough P. Downes |
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Affiliation: | School of Mathematical Sciences, Dublin City University, Glasnevin, Dublin 9, Ireland;Department of Physics, School of Science, Ferdowsi University, Mashhad, Iran |
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Abstract: | We investigate the linear theory of Kelvin–Helmholtz instability at the interface between a partially ionized dusty outflow and the ambient material analytically. We model the interaction as a multifluid system in a planar geometry. The unstable modes are independent from the charge polarity of the dust particles. Although our results show a stabilizing effect for charged dust particles, the growth time-scale of the growing modes gradually becomes independent of the mass or charge of the dust particles when the magnetic-field strength increases. We show that growth time-scale decreases with increasing the magnetic field. Also, as the mass of the dust particles increases, the growth time-scale of the unstable mode increases. |
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Keywords: | instabilities ISM: general ISM: jets and outflows |
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