Ion acoustic solitons in dense magnetized plasmas with nonrelativistic degenerate electrons and positrons
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/108040 |
Resumo: | The propagation of electrostatic waves in a densemagnetized electron–positron–ion (EPI) plasma with nonrelativistic and ultrarelativistic degenerate electrons and positrons is investigated. The linear dispersion relation is obtained for slow and fast electrostatic waves in the EPI plasma. The limiting cases for ion acoustic wave (slow) and ion cyclotron wave (fast) are also discussed. Using the reductive perturbation method, two-dimensional propagation of ion acoustic solitons is found for both the nonrelativistic and ultrarelativistic degenerate electrons and positrons. The effects of positron concentration, magnetic field, and mass of ions on ion acoustic solitons are shown in numerical plots. The proper form of Fermi temperature for nonrelativistic and ultrarelativistic degenerate electrons and positrons is employed, which has not been used in earlier published work. The present investigation is useful for the understanding of linear and nonlinear electrostatic wave propagation in the dense magnetized EPI plasma of compact stars. For illustration purposes, we have applied our results to a pulsar magnetosphere. |
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Sadiq, SafeerMahmood, ShahzadHaque, Q.Ali, Munazza Zulfiqar2014-12-11T02:15:57Z20140004-637Xhttp://hdl.handle.net/10183/108040000944019The propagation of electrostatic waves in a densemagnetized electron–positron–ion (EPI) plasma with nonrelativistic and ultrarelativistic degenerate electrons and positrons is investigated. The linear dispersion relation is obtained for slow and fast electrostatic waves in the EPI plasma. The limiting cases for ion acoustic wave (slow) and ion cyclotron wave (fast) are also discussed. Using the reductive perturbation method, two-dimensional propagation of ion acoustic solitons is found for both the nonrelativistic and ultrarelativistic degenerate electrons and positrons. The effects of positron concentration, magnetic field, and mass of ions on ion acoustic solitons are shown in numerical plots. The proper form of Fermi temperature for nonrelativistic and ultrarelativistic degenerate electrons and positrons is employed, which has not been used in earlier published work. The present investigation is useful for the understanding of linear and nonlinear electrostatic wave propagation in the dense magnetized EPI plasma of compact stars. For illustration purposes, we have applied our results to a pulsar magnetosphere.application/pdfengThe astrophysical journal. Bristol. Vol. 793, no. 1 (Sept. 2014), 27, 12 p.Plasmas relativisticosPlasmas astrofisicosSólitons em plasmasPulsarsRelações de dispersãoOndas íon-acústicas em plasmasAtmosferas estelaresPlasmasPulsars: generalStars: atmospheresWavesIon acoustic solitons in dense magnetized plasmas with nonrelativistic degenerate electrons and positronsEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL000944019.pdf000944019.pdfTexto completo (inglês)application/pdf514543http://www.lume.ufrgs.br/bitstream/10183/108040/1/000944019.pdf784f6a7dd2924f19d4d0d16d81d31020MD51TEXT000944019.pdf.txt000944019.pdf.txtExtracted Texttext/plain64317http://www.lume.ufrgs.br/bitstream/10183/108040/2/000944019.pdf.txt53ecb0b9920a3f4a67cb69751f56b91fMD52THUMBNAIL000944019.pdf.jpg000944019.pdf.jpgGenerated Thumbnailimage/jpeg2123http://www.lume.ufrgs.br/bitstream/10183/108040/3/000944019.pdf.jpg9f9a5e2b2ef3f50b06bbcd80c101ee66MD5310183/1080402018-10-22 08:40:29.262oai:www.lume.ufrgs.br:10183/108040Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2018-10-22T11:40:29Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Ion acoustic solitons in dense magnetized plasmas with nonrelativistic degenerate electrons and positrons |
title |
Ion acoustic solitons in dense magnetized plasmas with nonrelativistic degenerate electrons and positrons |
spellingShingle |
Ion acoustic solitons in dense magnetized plasmas with nonrelativistic degenerate electrons and positrons Sadiq, Safeer Plasmas relativisticos Plasmas astrofisicos Sólitons em plasmas Pulsars Relações de dispersão Ondas íon-acústicas em plasmas Atmosferas estelares Plasmas Pulsars: general Stars: atmospheres Waves |
title_short |
Ion acoustic solitons in dense magnetized plasmas with nonrelativistic degenerate electrons and positrons |
title_full |
Ion acoustic solitons in dense magnetized plasmas with nonrelativistic degenerate electrons and positrons |
title_fullStr |
Ion acoustic solitons in dense magnetized plasmas with nonrelativistic degenerate electrons and positrons |
title_full_unstemmed |
Ion acoustic solitons in dense magnetized plasmas with nonrelativistic degenerate electrons and positrons |
title_sort |
Ion acoustic solitons in dense magnetized plasmas with nonrelativistic degenerate electrons and positrons |
author |
Sadiq, Safeer |
author_facet |
Sadiq, Safeer Mahmood, Shahzad Haque, Q. Ali, Munazza Zulfiqar |
author_role |
author |
author2 |
Mahmood, Shahzad Haque, Q. Ali, Munazza Zulfiqar |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Sadiq, Safeer Mahmood, Shahzad Haque, Q. Ali, Munazza Zulfiqar |
dc.subject.por.fl_str_mv |
Plasmas relativisticos Plasmas astrofisicos Sólitons em plasmas Pulsars Relações de dispersão Ondas íon-acústicas em plasmas Atmosferas estelares |
topic |
Plasmas relativisticos Plasmas astrofisicos Sólitons em plasmas Pulsars Relações de dispersão Ondas íon-acústicas em plasmas Atmosferas estelares Plasmas Pulsars: general Stars: atmospheres Waves |
dc.subject.eng.fl_str_mv |
Plasmas Pulsars: general Stars: atmospheres Waves |
description |
The propagation of electrostatic waves in a densemagnetized electron–positron–ion (EPI) plasma with nonrelativistic and ultrarelativistic degenerate electrons and positrons is investigated. The linear dispersion relation is obtained for slow and fast electrostatic waves in the EPI plasma. The limiting cases for ion acoustic wave (slow) and ion cyclotron wave (fast) are also discussed. Using the reductive perturbation method, two-dimensional propagation of ion acoustic solitons is found for both the nonrelativistic and ultrarelativistic degenerate electrons and positrons. The effects of positron concentration, magnetic field, and mass of ions on ion acoustic solitons are shown in numerical plots. The proper form of Fermi temperature for nonrelativistic and ultrarelativistic degenerate electrons and positrons is employed, which has not been used in earlier published work. The present investigation is useful for the understanding of linear and nonlinear electrostatic wave propagation in the dense magnetized EPI plasma of compact stars. For illustration purposes, we have applied our results to a pulsar magnetosphere. |
publishDate |
2014 |
dc.date.accessioned.fl_str_mv |
2014-12-11T02:15:57Z |
dc.date.issued.fl_str_mv |
2014 |
dc.type.driver.fl_str_mv |
Estrangeiro info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/108040 |
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0004-637X |
dc.identifier.nrb.pt_BR.fl_str_mv |
000944019 |
identifier_str_mv |
0004-637X 000944019 |
url |
http://hdl.handle.net/10183/108040 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
The astrophysical journal. Bristol. Vol. 793, no. 1 (Sept. 2014), 27, 12 p. |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf |
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