Abstract
Modeling of dust-acoustic waves (DAWs) in a four-component plasma constituting negatively charged fluid dusts, superthermal electrons, positrons, and ions is analyzed. Employing the method of reductive perturbation, the Korteweg–de Vries (KdV) equation and modified KdV (mKdV) equations are formulated. Using a typical set of plasma parameters of interstellar medium, solutions of both equations are studied analytically and numerically. Each type of wave solution is confirmed by the plots of Hamiltonian energy function and potential energy function with specified set of physical parameters like superthermality index, number densities and temperature of plasma particles, and velocity of traveling wave in interstellar superthermal plasma.
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Acknowledgements
The first author is grateful to the Sikkim Manipal Institute of Technology (SMIT) and Sikkim Manipal university (SMU) for sanctioning research fellowship under TMA Pai University Research Fund (Ref. No. 118/SMU/REG/ UOO/104/2019).
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Kumari Prasad, P., Saha, A. (2022). Modeling of Nonlinear Wave Phenomena in Interstellar Superthermal Plasma. In: Giri, D., Raymond Choo, KK., Ponnusamy, S., Meng, W., Akleylek, S., Prasad Maity, S. (eds) Proceedings of the Seventh International Conference on Mathematics and Computing . Advances in Intelligent Systems and Computing, vol 1412. Springer, Singapore. https://doi.org/10.1007/978-981-16-6890-6_64
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