Kelvin-Helmholtz versus Hall magneto-shear instability in astrophysical flows

Autores
Gomez, Daniel Osvaldo; Bejarano, Cecilia Soledad; Mininni, Pablo Daniel
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We study the stability of shear flows in a fully ionized plasma. Kelvin-Helmholtz is a well-known macroscopic and ideal shear-driven instability. In sufficiently low-density plasmas, also the microscopic Hall magnetoshear instability can take place. We performed three-dimensional simulations of the Hall-magnetohydrodynamic equations where these two instabilities are present, and carried out a comparative study. We find that when the shear flow is so intense that its vorticity surpasses the ion-cyclotron frequency of the plasma, the Hall magnetoshear instability is not only non-negligible, but it actually displays growth rates larger than those of the Kelvin-Helmholtz instability.
Fil: Gomez, Daniel Osvaldo. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
Fil: Bejarano, Cecilia Soledad. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
Fil: Mininni, Pablo Daniel. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Física; Argentina
Materia
INSTABILITIES
MHD
SPACE PHYSICS
ASTROPHYSICS
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/17333
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/17333
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Kelvin-Helmholtz versus Hall magneto-shear instability in astrophysical flowsGomez, Daniel OsvaldoBejarano, Cecilia SoledadMininni, Pablo DanielINSTABILITIESMHDSPACE PHYSICSASTROPHYSICShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We study the stability of shear flows in a fully ionized plasma. Kelvin-Helmholtz is a well-known macroscopic and ideal shear-driven instability. In sufficiently low-density plasmas, also the microscopic Hall magnetoshear instability can take place. We performed three-dimensional simulations of the Hall-magnetohydrodynamic equations where these two instabilities are present, and carried out a comparative study. We find that when the shear flow is so intense that its vorticity surpasses the ion-cyclotron frequency of the plasma, the Hall magnetoshear instability is not only non-negligible, but it actually displays growth rates larger than those of the Kelvin-Helmholtz instability.Fil: Gomez, Daniel Osvaldo. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; ArgentinaFil: Bejarano, Cecilia Soledad. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; ArgentinaFil: Mininni, Pablo Daniel. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Física; ArgentinaAmerican Physical Society2014-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/17333Gomez, Daniel Osvaldo; Bejarano, Cecilia Soledad; Mininni, Pablo Daniel; Kelvin-Helmholtz versus Hall magneto-shear instability in astrophysical flows; American Physical Society; Physical Review E: Statistical, Nonlinear And Soft Matter Physics; 89; 5; 5-2014; 5310501-53105071539-3755enginfo:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/pre/abstract/10.1103/PhysRevE.89.053105info:eu-repo/semantics/altIdentifier/url/http://dx.doi.org/10.1103/PhysRevE.89.053105info:eu-repo/semantics/altIdentifier/arxiv/https://arxiv.org/abs/1405.6220info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-11-26T08:51:39Zoai:ri.conicet.gov.ar:11336/17333instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-11-26 08:51:39.426CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Kelvin-Helmholtz versus Hall magneto-shear instability in astrophysical flows
title Kelvin-Helmholtz versus Hall magneto-shear instability in astrophysical flows
spellingShingle Kelvin-Helmholtz versus Hall magneto-shear instability in astrophysical flows
Gomez, Daniel Osvaldo
INSTABILITIES
MHD
SPACE PHYSICS
ASTROPHYSICS
title_short Kelvin-Helmholtz versus Hall magneto-shear instability in astrophysical flows
title_full Kelvin-Helmholtz versus Hall magneto-shear instability in astrophysical flows
title_fullStr Kelvin-Helmholtz versus Hall magneto-shear instability in astrophysical flows
title_full_unstemmed Kelvin-Helmholtz versus Hall magneto-shear instability in astrophysical flows
title_sort Kelvin-Helmholtz versus Hall magneto-shear instability in astrophysical flows
dc.creator.none.fl_str_mv Gomez, Daniel Osvaldo
Bejarano, Cecilia Soledad
Mininni, Pablo Daniel
author Gomez, Daniel Osvaldo
author_facet Gomez, Daniel Osvaldo
Bejarano, Cecilia Soledad
Mininni, Pablo Daniel
author_role author
author2 Bejarano, Cecilia Soledad
Mininni, Pablo Daniel
author2_role author
author
dc.subject.none.fl_str_mv INSTABILITIES
MHD
SPACE PHYSICS
ASTROPHYSICS
topic INSTABILITIES
MHD
SPACE PHYSICS
ASTROPHYSICS
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We study the stability of shear flows in a fully ionized plasma. Kelvin-Helmholtz is a well-known macroscopic and ideal shear-driven instability. In sufficiently low-density plasmas, also the microscopic Hall magnetoshear instability can take place. We performed three-dimensional simulations of the Hall-magnetohydrodynamic equations where these two instabilities are present, and carried out a comparative study. We find that when the shear flow is so intense that its vorticity surpasses the ion-cyclotron frequency of the plasma, the Hall magnetoshear instability is not only non-negligible, but it actually displays growth rates larger than those of the Kelvin-Helmholtz instability.
Fil: Gomez, Daniel Osvaldo. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
Fil: Bejarano, Cecilia Soledad. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
Fil: Mininni, Pablo Daniel. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Física; Argentina
description We study the stability of shear flows in a fully ionized plasma. Kelvin-Helmholtz is a well-known macroscopic and ideal shear-driven instability. In sufficiently low-density plasmas, also the microscopic Hall magnetoshear instability can take place. We performed three-dimensional simulations of the Hall-magnetohydrodynamic equations where these two instabilities are present, and carried out a comparative study. We find that when the shear flow is so intense that its vorticity surpasses the ion-cyclotron frequency of the plasma, the Hall magnetoshear instability is not only non-negligible, but it actually displays growth rates larger than those of the Kelvin-Helmholtz instability.
publishDate 2014
dc.date.none.fl_str_mv 2014-05
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/17333
Gomez, Daniel Osvaldo; Bejarano, Cecilia Soledad; Mininni, Pablo Daniel; Kelvin-Helmholtz versus Hall magneto-shear instability in astrophysical flows; American Physical Society; Physical Review E: Statistical, Nonlinear And Soft Matter Physics; 89; 5; 5-2014; 5310501-5310507
1539-3755
url http://hdl.handle.net/11336/17333
identifier_str_mv Gomez, Daniel Osvaldo; Bejarano, Cecilia Soledad; Mininni, Pablo Daniel; Kelvin-Helmholtz versus Hall magneto-shear instability in astrophysical flows; American Physical Society; Physical Review E: Statistical, Nonlinear And Soft Matter Physics; 89; 5; 5-2014; 5310501-5310507
1539-3755
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/pre/abstract/10.1103/PhysRevE.89.053105
info:eu-repo/semantics/altIdentifier/url/http://dx.doi.org/10.1103/PhysRevE.89.053105
info:eu-repo/semantics/altIdentifier/arxiv/https://arxiv.org/abs/1405.6220
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.011256

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