On the spatio-temporal behavior of magnetohydrodynamic turbulence in a magnetized plasma

Autores
Lugones, Rodrigo; Dmitruk, Pablo Ariel; Mininni, Pablo Daniel; Wang, Minmin; Matthaeus, W.H.
Año de publicación
2016
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Using direct numerical simulations of three-dimensional magnetohydrodynamic turbulence, the spatio-temporal behavior of magnetic field fluctuations is analyzed. Cases with relatively small, medium, and large values of a mean background magnetic field are considered. The (wavenumber) scale dependent time correlation function is directly computed for different simulations, varying the mean magnetic field value. From this correlation function, the time decorrelation is computed and compared with different theoretical times, namely, the local non-linear time, the random sweeping time, and the Alfvénic time, the latter being a wave effect. It is observed that time decorrelations are dominated by sweeping effects, and only at large values of the mean magnetic field and for wave vectors mainly aligned with this field time decorrelations are controlled by Alfvénic effects.
Fil: Lugones, Rodrigo. Universidad de Buenos Aires; Argentina
Fil: Dmitruk, Pablo Ariel. Universidad de Buenos Aires; Argentina
Fil: Mininni, Pablo Daniel. Universidad de Buenos Aires; Argentina
Fil: Wang, Minmin. Bartol Research Institute; Reino Unido
Fil: Matthaeus, W.H.. Bartol Research Institute; Reino Unido
Materia
Alfven Waves
Plasma Physics
Turbulence
Magnetohydrodynamics
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:11336/49271
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/49271
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling On the spatio-temporal behavior of magnetohydrodynamic turbulence in a magnetized plasmaLugones, RodrigoDmitruk, Pablo ArielMininni, Pablo DanielWang, MinminMatthaeus, W.H.Alfven WavesPlasma PhysicsTurbulenceMagnetohydrodynamicshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Using direct numerical simulations of three-dimensional magnetohydrodynamic turbulence, the spatio-temporal behavior of magnetic field fluctuations is analyzed. Cases with relatively small, medium, and large values of a mean background magnetic field are considered. The (wavenumber) scale dependent time correlation function is directly computed for different simulations, varying the mean magnetic field value. From this correlation function, the time decorrelation is computed and compared with different theoretical times, namely, the local non-linear time, the random sweeping time, and the Alfvénic time, the latter being a wave effect. It is observed that time decorrelations are dominated by sweeping effects, and only at large values of the mean magnetic field and for wave vectors mainly aligned with this field time decorrelations are controlled by Alfvénic effects.Fil: Lugones, Rodrigo. Universidad de Buenos Aires; ArgentinaFil: Dmitruk, Pablo Ariel. Universidad de Buenos Aires; ArgentinaFil: Mininni, Pablo Daniel. Universidad de Buenos Aires; ArgentinaFil: Wang, Minmin. Bartol Research Institute; Reino UnidoFil: Matthaeus, W.H.. Bartol Research Institute; Reino UnidoAmerican Institute of Physics2016-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/49271Lugones, Rodrigo; Dmitruk, Pablo Ariel; Mininni, Pablo Daniel; Wang, Minmin; Matthaeus, W.H.; On the spatio-temporal behavior of magnetohydrodynamic turbulence in a magnetized plasma; American Institute of Physics; Physics Of Plasmas; 23; 11; 11-2016; 11230401-112304121070-664XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://aip.scitation.org/doi/full/10.1063/1.4968236info:eu-repo/semantics/altIdentifier/doi/10.1063/1.4968236info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:01:17Zoai:ri.conicet.gov.ar:11336/49271instacron: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:34982025-09-29 10:01:17.416CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv On the spatio-temporal behavior of magnetohydrodynamic turbulence in a magnetized plasma
title On the spatio-temporal behavior of magnetohydrodynamic turbulence in a magnetized plasma
spellingShingle On the spatio-temporal behavior of magnetohydrodynamic turbulence in a magnetized plasma
Lugones, Rodrigo
Alfven Waves
Plasma Physics
Turbulence
Magnetohydrodynamics
title_short On the spatio-temporal behavior of magnetohydrodynamic turbulence in a magnetized plasma
title_full On the spatio-temporal behavior of magnetohydrodynamic turbulence in a magnetized plasma
title_fullStr On the spatio-temporal behavior of magnetohydrodynamic turbulence in a magnetized plasma
title_full_unstemmed On the spatio-temporal behavior of magnetohydrodynamic turbulence in a magnetized plasma
title_sort On the spatio-temporal behavior of magnetohydrodynamic turbulence in a magnetized plasma
dc.creator.none.fl_str_mv Lugones, Rodrigo
Dmitruk, Pablo Ariel
Mininni, Pablo Daniel
Wang, Minmin
Matthaeus, W.H.
author Lugones, Rodrigo
author_facet Lugones, Rodrigo
Dmitruk, Pablo Ariel
Mininni, Pablo Daniel
Wang, Minmin
Matthaeus, W.H.
author_role author
author2 Dmitruk, Pablo Ariel
Mininni, Pablo Daniel
Wang, Minmin
Matthaeus, W.H.
author2_role author
author
author
author
dc.subject.none.fl_str_mv Alfven Waves
Plasma Physics
Turbulence
Magnetohydrodynamics
topic Alfven Waves
Plasma Physics
Turbulence
Magnetohydrodynamics
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Using direct numerical simulations of three-dimensional magnetohydrodynamic turbulence, the spatio-temporal behavior of magnetic field fluctuations is analyzed. Cases with relatively small, medium, and large values of a mean background magnetic field are considered. The (wavenumber) scale dependent time correlation function is directly computed for different simulations, varying the mean magnetic field value. From this correlation function, the time decorrelation is computed and compared with different theoretical times, namely, the local non-linear time, the random sweeping time, and the Alfvénic time, the latter being a wave effect. It is observed that time decorrelations are dominated by sweeping effects, and only at large values of the mean magnetic field and for wave vectors mainly aligned with this field time decorrelations are controlled by Alfvénic effects.
Fil: Lugones, Rodrigo. Universidad de Buenos Aires; Argentina
Fil: Dmitruk, Pablo Ariel. Universidad de Buenos Aires; Argentina
Fil: Mininni, Pablo Daniel. Universidad de Buenos Aires; Argentina
Fil: Wang, Minmin. Bartol Research Institute; Reino Unido
Fil: Matthaeus, W.H.. Bartol Research Institute; Reino Unido
description Using direct numerical simulations of three-dimensional magnetohydrodynamic turbulence, the spatio-temporal behavior of magnetic field fluctuations is analyzed. Cases with relatively small, medium, and large values of a mean background magnetic field are considered. The (wavenumber) scale dependent time correlation function is directly computed for different simulations, varying the mean magnetic field value. From this correlation function, the time decorrelation is computed and compared with different theoretical times, namely, the local non-linear time, the random sweeping time, and the Alfvénic time, the latter being a wave effect. It is observed that time decorrelations are dominated by sweeping effects, and only at large values of the mean magnetic field and for wave vectors mainly aligned with this field time decorrelations are controlled by Alfvénic effects.
publishDate 2016
dc.date.none.fl_str_mv 2016-11
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/11336/49271
Lugones, Rodrigo; Dmitruk, Pablo Ariel; Mininni, Pablo Daniel; Wang, Minmin; Matthaeus, W.H.; On the spatio-temporal behavior of magnetohydrodynamic turbulence in a magnetized plasma; American Institute of Physics; Physics Of Plasmas; 23; 11; 11-2016; 11230401-11230412
1070-664X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/49271
identifier_str_mv Lugones, Rodrigo; Dmitruk, Pablo Ariel; Mininni, Pablo Daniel; Wang, Minmin; Matthaeus, W.H.; On the spatio-temporal behavior of magnetohydrodynamic turbulence in a magnetized plasma; American Institute of Physics; Physics Of Plasmas; 23; 11; 11-2016; 11230401-11230412
1070-664X
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://aip.scitation.org/doi/full/10.1063/1.4968236
info:eu-repo/semantics/altIdentifier/doi/10.1063/1.4968236
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
dc.publisher.none.fl_str_mv American Institute of Physics
publisher.none.fl_str_mv American Institute of Physics
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 13.070432

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