A rigorous theoretical investigation has been made on the formation of the nonlinear structures (viz., solitary waves, double layers) in a dusty electron-positron-ion plasma (containing inertialess degenerate electrons and positrons, cold, mobile, inertial ions, and negatively charged stationary dust). The pseudo potential method has been employed in this theoretical investigation. The basic features of the solitary waves and double layers, which are associated with positive ion dynamics and pressures of degenerate electrons and positrons, are identified. The co-existence of positive and negative solitary waves, and existence of either positive or negative double layers have been theoretically observed for certain range of different plasma parameters. The implications of our results in astrophysical compact objects have been briefly discussed.
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March 2012
Research Article|
March 09 2012
Solitary waves and double layers in an ultra-relativistic degenerate dusty electron-positron-ion plasma
N. Roy;
N. Roy
1Department of Basic Sciences and Humanities,
University of Asia Pacific
, Dhaka, Bangladesh
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S. Tasnim;
S. Tasnim
2Department of Natural Science,
Stamford University Bangladesh
, Siddeswari, Dhaka 1217, Bangladesh
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A. A. Mamun
A. A. Mamun
3Department of Physics,
Jahangirnagar University
, Savar, Dhaka 1342, Bangladesh
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Phys. Plasmas 19, 033705 (2012)
Article history
Received:
December 14 2011
Accepted:
January 27 2012
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Citation
N. Roy, S. Tasnim, A. A. Mamun; Solitary waves and double layers in an ultra-relativistic degenerate dusty electron-positron-ion plasma. Phys. Plasmas 1 March 2012; 19 (3): 033705. https://doi.org/10.1063/1.3688877
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