Abstract
The dynamics of firehose instability (FHI) in the presence of beams is investigated by applying kinetic theory and general loss cone distribution (GLCD) function. It is explained how ion/electron beams affect the growth rate and length of the FHI in low beta homogeneous plasma. The energy of the transversely heated ions is found to be reduced by the ion beam, whereas the temperature anisotropy arranges free energy, to begin with, and accelerates the growth rate of the instability. It has been discovered that the firehose instability results from the extraction of energy from ions heated perpendicularly in the presence of upflowing ion beams in the asymmetrical magneto-plasma. In the auroral acceleration region, the findings are expressed in terms of the firehose instability. The findings may be checked and then may be applied in dusty and multi-component space plasma also.
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