Magnetic correlation functions in the slow and fast solar wind in the Eulerian reference frame

Autores
Weygand, James M.; Matthaeus, W. H.; Kivelson M. G.; Dasso, Sergio Ricardo
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Simultaneous multiple point measurements of the magnetic field from seven spacecraft are employed to estimate the Eulerian correlation function and decorrelation time scales in the near Earth solar wind for two different solar wind speed ranges. We find that the Eulerian decorrelation time scale differs significantly in the slow solar wind (<450 km/s), where quasi-two-dimensional turbulence dominates, and in the fast solar (>600 km/s) wind, where slab-type turbulence dominates. In slow solar wind, the decorrelation time is 215 ± 43 min, and in fast solar wind, the decorrelation time scale is 114 ± 23 min, which indicates that
decorrelation times vary with the nature of the turbulence. The values reported here are comparable to estimates of decorrelation times based on a number of different models, but do not clearly support or refute any specific solar wind turbulence model. These results may be useful in magnetohydrodynamic modeling of the solar wind and can contribute to our understanding of solar and galactic cosmic ray diffusion in the heliosphere.
Fil: Weygand, James M.. University of California; Estados Unidos
Fil: Matthaeus, W. H.. University of Delaware; Estados Unidos
Fil: Kivelson M. G.. University of California; Estados Unidos
Fil: Dasso, Sergio Ricardo. 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. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Física; Argentina
Materia
MHD Turbulence
Solar Wind
Space Physics
Space Weather
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:11336/17072
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/17072
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Magnetic correlation functions in the slow and fast solar wind in the Eulerian reference frameWeygand, James M.Matthaeus, W. H.Kivelson M. G.Dasso, Sergio RicardoMHD TurbulenceSolar WindSpace PhysicsSpace Weatherhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Simultaneous multiple point measurements of the magnetic field from seven spacecraft are employed to estimate the Eulerian correlation function and decorrelation time scales in the near Earth solar wind for two different solar wind speed ranges. We find that the Eulerian decorrelation time scale differs significantly in the slow solar wind (<450 km/s), where quasi-two-dimensional turbulence dominates, and in the fast solar (>600 km/s) wind, where slab-type turbulence dominates. In slow solar wind, the decorrelation time is 215 ± 43 min, and in fast solar wind, the decorrelation time scale is 114 ± 23 min, which indicates that<br />decorrelation times vary with the nature of the turbulence. The values reported here are comparable to estimates of decorrelation times based on a number of different models, but do not clearly support or refute any specific solar wind turbulence model. These results may be useful in magnetohydrodynamic modeling of the solar wind and can contribute to our understanding of solar and galactic cosmic ray diffusion in the heliosphere.Fil: Weygand, James M.. University of California; Estados UnidosFil: Matthaeus, W. H.. University of Delaware; Estados UnidosFil: Kivelson M. G.. University of California; Estados UnidosFil: Dasso, Sergio Ricardo. 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. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Física; ArgentinaAmerican Geophysical Union2013-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/17072Weygand, James M.; Matthaeus, W. H.; Kivelson M. G.; Dasso, Sergio Ricardo; Magnetic correlation functions in the slow and fast solar wind in the Eulerian reference frame; American Geophysical Union; Journal Of Geophysical Research; 118; 7; 6-2013; 3995-40040148-0227enginfo:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1002/jgra.50398/abstractinfo:eu-repo/semantics/altIdentifier/doi/10.1002/jgra.50398info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T12:03:26Zoai:ri.conicet.gov.ar:11336/17072instacron: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:34982025-10-22 12:03:27.281CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Magnetic correlation functions in the slow and fast solar wind in the Eulerian reference frame
title Magnetic correlation functions in the slow and fast solar wind in the Eulerian reference frame
spellingShingle Magnetic correlation functions in the slow and fast solar wind in the Eulerian reference frame
Weygand, James M.
MHD Turbulence
Solar Wind
Space Physics
Space Weather
title_short Magnetic correlation functions in the slow and fast solar wind in the Eulerian reference frame
title_full Magnetic correlation functions in the slow and fast solar wind in the Eulerian reference frame
title_fullStr Magnetic correlation functions in the slow and fast solar wind in the Eulerian reference frame
title_full_unstemmed Magnetic correlation functions in the slow and fast solar wind in the Eulerian reference frame
title_sort Magnetic correlation functions in the slow and fast solar wind in the Eulerian reference frame
dc.creator.none.fl_str_mv Weygand, James M.
Matthaeus, W. H.
Kivelson M. G.
Dasso, Sergio Ricardo
author Weygand, James M.
author_facet Weygand, James M.
Matthaeus, W. H.
Kivelson M. G.
Dasso, Sergio Ricardo
author_role author
author2 Matthaeus, W. H.
Kivelson M. G.
Dasso, Sergio Ricardo
author2_role author
author
author
dc.subject.none.fl_str_mv MHD Turbulence
Solar Wind
Space Physics
Space Weather
topic MHD Turbulence
Solar Wind
Space Physics
Space Weather
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Simultaneous multiple point measurements of the magnetic field from seven spacecraft are employed to estimate the Eulerian correlation function and decorrelation time scales in the near Earth solar wind for two different solar wind speed ranges. We find that the Eulerian decorrelation time scale differs significantly in the slow solar wind (<450 km/s), where quasi-two-dimensional turbulence dominates, and in the fast solar (>600 km/s) wind, where slab-type turbulence dominates. In slow solar wind, the decorrelation time is 215 ± 43 min, and in fast solar wind, the decorrelation time scale is 114 ± 23 min, which indicates that<br />decorrelation times vary with the nature of the turbulence. The values reported here are comparable to estimates of decorrelation times based on a number of different models, but do not clearly support or refute any specific solar wind turbulence model. These results may be useful in magnetohydrodynamic modeling of the solar wind and can contribute to our understanding of solar and galactic cosmic ray diffusion in the heliosphere.
Fil: Weygand, James M.. University of California; Estados Unidos
Fil: Matthaeus, W. H.. University of Delaware; Estados Unidos
Fil: Kivelson M. G.. University of California; Estados Unidos
Fil: Dasso, Sergio Ricardo. 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. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Física; Argentina
description Simultaneous multiple point measurements of the magnetic field from seven spacecraft are employed to estimate the Eulerian correlation function and decorrelation time scales in the near Earth solar wind for two different solar wind speed ranges. We find that the Eulerian decorrelation time scale differs significantly in the slow solar wind (<450 km/s), where quasi-two-dimensional turbulence dominates, and in the fast solar (>600 km/s) wind, where slab-type turbulence dominates. In slow solar wind, the decorrelation time is 215 ± 43 min, and in fast solar wind, the decorrelation time scale is 114 ± 23 min, which indicates that<br />decorrelation times vary with the nature of the turbulence. The values reported here are comparable to estimates of decorrelation times based on a number of different models, but do not clearly support or refute any specific solar wind turbulence model. These results may be useful in magnetohydrodynamic modeling of the solar wind and can contribute to our understanding of solar and galactic cosmic ray diffusion in the heliosphere.
publishDate 2013
dc.date.none.fl_str_mv 2013-06
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/11336/17072
Weygand, James M.; Matthaeus, W. H.; Kivelson M. G.; Dasso, Sergio Ricardo; Magnetic correlation functions in the slow and fast solar wind in the Eulerian reference frame; American Geophysical Union; Journal Of Geophysical Research; 118; 7; 6-2013; 3995-4004
0148-0227
url http://hdl.handle.net/11336/17072
identifier_str_mv Weygand, James M.; Matthaeus, W. H.; Kivelson M. G.; Dasso, Sergio Ricardo; Magnetic correlation functions in the slow and fast solar wind in the Eulerian reference frame; American Geophysical Union; Journal Of Geophysical Research; 118; 7; 6-2013; 3995-4004
0148-0227
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1002/jgra.50398/abstract
info:eu-repo/semantics/altIdentifier/doi/10.1002/jgra.50398
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 Geophysical Union
publisher.none.fl_str_mv American Geophysical Union
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 12.982451

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