| Journal: | Brazilian journal of physics |
| Database: | PERIÓDICA |
| System number: | 000388381 |
| ISSN: | 0103-9733 |
| Authors: | El-Labany, S.K1 El-Taibany, W.F1 El-Samahy, A.E2 Hafez, A.M2 Atteya, A2 |
| Institutions: | 1Damietta University, Faculty of Science, New Damietta. Egipto 2Alexandria University, Faculty of Science, Alejandría. Egipto |
| Year: | 2015 |
| Season: | Ago |
| Volumen: | 45 |
| Number: | 4 |
| Pages: | 409-418 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Experimental, analítico |
| English abstract | Using the reductive perturbation technique (RPT), the nonlinear propagation of magnetosonic solitary waves in an ultracold, degenerate (extremely dense) electron-positron (EP) plasma (containing ultracold, degenerate electron, and positron fluids) is investigated. The set of basic equations is reduced to a Korteweg-de Vries (KdV) equation for the lowest-order perturbed magnetic field and to a KdV type equation for the higher-order perturbed magnetic field. The solutions of these evolution equations are obtained. For better accuracy and searching on new features, the new solutions are analyzed numerically based on compact objects (white dwarf) parameters. It is found that including the higher-order corrections results as a reduction (increment) of the fast (slow) electromagnetic wave amplitude but the wave width is increased in both cases. The ranges where the RPT can describe adequately the total magnetic field including different conditions are discussed |
| Disciplines: | Física y astronomía |
| Keyword: | Teoría cinética y plasmas, Ondas solitarias, Plasma de electrón-positrón, Efecto relativista, Presión degenerada, Objetos compactos |
| Keyword: | Physics and astronomy, Kinetic theory and plasma, Solitary waves, Electron-positron plasma, Relativistic effect, Degenerate pressure, Compact objects |
| Full text: | Texto completo (Ver HTML) |
