Study of Nonlinear Waves in Astrophysical Quantum Plasmas
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| Format: | Artículo científico |
| Sprache: | en |
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Sociedade Brasileira de Física
2015
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| _version_ | 1876479361748566016 |
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| author | M. R. Hossen |
| author_facet | M. R. Hossen |
| contents | Study of Nonlinear Waves in Astrophysical Quantum Plasmas M. R. Hossen A. A. Mamun Física, Astronomía y Matemáticas Solitary waves Relativistic effect Astrophysical plasmas The nonlinear propagation of the electron- acoustic solitary waves (EASWs) in an unmagnetized, collisionless degenerate quantum plasma system has been investigated theoretically. Our considered model consist- ing of two distinct groups of electrons (one of inertial non-relativistic cold electrons and other of inertialess ultra- relativistic hot electrons) and positively charged static ions. The Korteweg-de Vries (K-dV) equation has been derived by employing the reductive perturbation method and numer- ically examined to identify the basic features (speed, ampli- tude, width, etc.) of EASWs. It is shown that only rarefac- tive solitary waves can propagate in such a quantum plasma system. It is found that the effect of degenerate pressure and number density of hot and cold electron fluids, and pos- itively charged static ions, significantly modify the basic features of EASWs. It is also noted that the inertial cold electron fluid is the source of dispersion for EA waves and is responsible for the formation of solitary structures. The applications of this investigation in astrophysical compact objects (viz. non-rotating white dwarfs, neutron stars, etc.) are briefly discussed. 2015 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46438835002 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.2 Vol.45 |
| format | Artículo científico |
| id | redalyc_46438835002 |
| institution | Redalyc |
| language | en |
| publishDate | 2015 |
| publisher | Sociedade Brasileira de Física |
| spellingShingle | Study of Nonlinear Waves in Astrophysical Quantum Plasmas M. R. Hossen Física, Astronomía y Matemáticas Solitary waves Relativistic effect Astrophysical plasmas Study of Nonlinear Waves in Astrophysical Quantum Plasmas M. R. Hossen A. A. Mamun Física, Astronomía y Matemáticas Solitary waves Relativistic effect Astrophysical plasmas The nonlinear propagation of the electron- acoustic solitary waves (EASWs) in an unmagnetized, collisionless degenerate quantum plasma system has been investigated theoretically. Our considered model consist- ing of two distinct groups of electrons (one of inertial non-relativistic cold electrons and other of inertialess ultra- relativistic hot electrons) and positively charged static ions. The Korteweg-de Vries (K-dV) equation has been derived by employing the reductive perturbation method and numer- ically examined to identify the basic features (speed, ampli- tude, width, etc.) of EASWs. It is shown that only rarefac- tive solitary waves can propagate in such a quantum plasma system. It is found that the effect of degenerate pressure and number density of hot and cold electron fluids, and pos- itively charged static ions, significantly modify the basic features of EASWs. It is also noted that the inertial cold electron fluid is the source of dispersion for EA waves and is responsible for the formation of solitary structures. The applications of this investigation in astrophysical compact objects (viz. non-rotating white dwarfs, neutron stars, etc.) are briefly discussed. 2015 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46438835002 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.2 Vol.45 |
| title | Study of Nonlinear Waves in Astrophysical Quantum Plasmas |
| topic | Física, Astronomía y Matemáticas Solitary waves Relativistic effect Astrophysical plasmas |
| url | https://www.redalyc.org/articulo.oa?id=46438835002 |