Magnetic reconnection along quasi-separatrix layers as a drivers of ubiquitous active region outflows

Autores
Baker, D.; van Driel Gesztelyi, Lidia; Mandrini, Cristina Hemilse; Démoulin, Pascal; Murray, M.J.
Año de publicación
2009
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Hinode´s EUV Imaging Spectrometer (EIS) has discovered ubiquitous outflows of a few to 50 km s-1 from active regions (ARs). These outflows are most prominent at the AR boundary and appear over monopolar magnetic areas. They are linked to strong non-thermal line broadening and are stronger in hotter EUV lines. The outflows persist for at least several days. Using Hinode EIS and X-Ray Telescope observations of AR 10942 coupled with magnetic modeling, we demonstrate that the outflows originate from specific locations of the magnetic topology where field lines display strong gradients of magnetic connectivity, namely quasi-separatrix layers (QSLs), or in the limit of infinitely thin QSLs, separatrices. We found the strongest AR outflows to be in the vicinity of QSL sections located over areas of strong magnetic field. We argue that magnetic reconnection at QSLs separating closed field lines of the AR and either large-scale externally connected or "open" field lines is a viable mechanism for driving AR outflows which are likely sources of the slow solar wind.
Fil: Baker, D.. University College London; Estados Unidos
Fil: van Driel Gesztelyi, Lidia. Centre National de la Recherche Scientifique. Observatoire de Paris; Francia
Fil: Mandrini, Cristina Hemilse. 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: Démoulin, Pascal. Centre National de la Recherche Scientifique. Observatoire de Paris; Francia
Fil: Murray, M.J.. University College London; Estados Unidos
Materia
SUN: ATMOSPHERIC MOTIONS
SUN: CORONA
SUN: MAGNETIC FIELDS
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:11336/20519
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Magnetic reconnection along quasi-separatrix layers as a drivers of ubiquitous active region outflowsBaker, D.van Driel Gesztelyi, LidiaMandrini, Cristina HemilseDémoulin, PascalMurray, M.J.SUN: ATMOSPHERIC MOTIONSSUN: CORONASUN: MAGNETIC FIELDShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Hinode´s EUV Imaging Spectrometer (EIS) has discovered ubiquitous outflows of a few to 50 km s<sup>-1</sup> from active regions (ARs). These outflows are most prominent at the AR boundary and appear over monopolar magnetic areas. They are linked to strong non-thermal line broadening and are stronger in hotter EUV lines. The outflows persist for at least several days. Using Hinode EIS and X-Ray Telescope observations of AR 10942 coupled with magnetic modeling, we demonstrate that the outflows originate from specific locations of the magnetic topology where field lines display strong gradients of magnetic connectivity, namely quasi-separatrix layers (QSLs), or in the limit of infinitely thin QSLs, separatrices. We found the strongest AR outflows to be in the vicinity of QSL sections located over areas of strong magnetic field. We argue that magnetic reconnection at QSLs separating closed field lines of the AR and either large-scale externally connected or "open" field lines is a viable mechanism for driving AR outflows which are likely sources of the slow solar wind.Fil: Baker, D.. University College London; Estados UnidosFil: van Driel Gesztelyi, Lidia. Centre National de la Recherche Scientifique. Observatoire de Paris; FranciaFil: Mandrini, Cristina Hemilse. 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: Démoulin, Pascal. Centre National de la Recherche Scientifique. Observatoire de Paris; FranciaFil: Murray, M.J.. University College London; Estados UnidosIOP Publishing2009-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/20519Baker, D.; van Driel Gesztelyi, Lidia; Mandrini, Cristina Hemilse; Démoulin, Pascal; Murray, M.J.; Magnetic reconnection along quasi-separatrix layers as a drivers of ubiquitous active region outflows; IOP Publishing; Astrophysical Journal; 705; 1; 11-2009; 926-9350004-637XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1088/0004-637X/705/1/926info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/0004-637X/705/1/926/metainfo:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/0909.4738info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:09:01Zoai:ri.conicet.gov.ar:11336/20519instacron: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:34982025-10-15 15:09:01.988CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Magnetic reconnection along quasi-separatrix layers as a drivers of ubiquitous active region outflows
title Magnetic reconnection along quasi-separatrix layers as a drivers of ubiquitous active region outflows
spellingShingle Magnetic reconnection along quasi-separatrix layers as a drivers of ubiquitous active region outflows
Baker, D.
SUN: ATMOSPHERIC MOTIONS
SUN: CORONA
SUN: MAGNETIC FIELDS
title_short Magnetic reconnection along quasi-separatrix layers as a drivers of ubiquitous active region outflows
title_full Magnetic reconnection along quasi-separatrix layers as a drivers of ubiquitous active region outflows
title_fullStr Magnetic reconnection along quasi-separatrix layers as a drivers of ubiquitous active region outflows
title_full_unstemmed Magnetic reconnection along quasi-separatrix layers as a drivers of ubiquitous active region outflows
title_sort Magnetic reconnection along quasi-separatrix layers as a drivers of ubiquitous active region outflows
dc.creator.none.fl_str_mv Baker, D.
van Driel Gesztelyi, Lidia
Mandrini, Cristina Hemilse
Démoulin, Pascal
Murray, M.J.
author Baker, D.
author_facet Baker, D.
van Driel Gesztelyi, Lidia
Mandrini, Cristina Hemilse
Démoulin, Pascal
Murray, M.J.
author_role author
author2 van Driel Gesztelyi, Lidia
Mandrini, Cristina Hemilse
Démoulin, Pascal
Murray, M.J.
author2_role author
author
author
author
dc.subject.none.fl_str_mv SUN: ATMOSPHERIC MOTIONS
SUN: CORONA
SUN: MAGNETIC FIELDS
topic SUN: ATMOSPHERIC MOTIONS
SUN: CORONA
SUN: MAGNETIC FIELDS
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Hinode´s EUV Imaging Spectrometer (EIS) has discovered ubiquitous outflows of a few to 50 km s<sup>-1</sup> from active regions (ARs). These outflows are most prominent at the AR boundary and appear over monopolar magnetic areas. They are linked to strong non-thermal line broadening and are stronger in hotter EUV lines. The outflows persist for at least several days. Using Hinode EIS and X-Ray Telescope observations of AR 10942 coupled with magnetic modeling, we demonstrate that the outflows originate from specific locations of the magnetic topology where field lines display strong gradients of magnetic connectivity, namely quasi-separatrix layers (QSLs), or in the limit of infinitely thin QSLs, separatrices. We found the strongest AR outflows to be in the vicinity of QSL sections located over areas of strong magnetic field. We argue that magnetic reconnection at QSLs separating closed field lines of the AR and either large-scale externally connected or "open" field lines is a viable mechanism for driving AR outflows which are likely sources of the slow solar wind.
Fil: Baker, D.. University College London; Estados Unidos
Fil: van Driel Gesztelyi, Lidia. Centre National de la Recherche Scientifique. Observatoire de Paris; Francia
Fil: Mandrini, Cristina Hemilse. 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: Démoulin, Pascal. Centre National de la Recherche Scientifique. Observatoire de Paris; Francia
Fil: Murray, M.J.. University College London; Estados Unidos
description Hinode´s EUV Imaging Spectrometer (EIS) has discovered ubiquitous outflows of a few to 50 km s<sup>-1</sup> from active regions (ARs). These outflows are most prominent at the AR boundary and appear over monopolar magnetic areas. They are linked to strong non-thermal line broadening and are stronger in hotter EUV lines. The outflows persist for at least several days. Using Hinode EIS and X-Ray Telescope observations of AR 10942 coupled with magnetic modeling, we demonstrate that the outflows originate from specific locations of the magnetic topology where field lines display strong gradients of magnetic connectivity, namely quasi-separatrix layers (QSLs), or in the limit of infinitely thin QSLs, separatrices. We found the strongest AR outflows to be in the vicinity of QSL sections located over areas of strong magnetic field. We argue that magnetic reconnection at QSLs separating closed field lines of the AR and either large-scale externally connected or "open" field lines is a viable mechanism for driving AR outflows which are likely sources of the slow solar wind.
publishDate 2009
dc.date.none.fl_str_mv 2009-11
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/11336/20519
Baker, D.; van Driel Gesztelyi, Lidia; Mandrini, Cristina Hemilse; Démoulin, Pascal; Murray, M.J.; Magnetic reconnection along quasi-separatrix layers as a drivers of ubiquitous active region outflows; IOP Publishing; Astrophysical Journal; 705; 1; 11-2009; 926-935
0004-637X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/20519
identifier_str_mv Baker, D.; van Driel Gesztelyi, Lidia; Mandrini, Cristina Hemilse; Démoulin, Pascal; Murray, M.J.; Magnetic reconnection along quasi-separatrix layers as a drivers of ubiquitous active region outflows; IOP Publishing; Astrophysical Journal; 705; 1; 11-2009; 926-935
0004-637X
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1088/0004-637X/705/1/926
info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/0004-637X/705/1/926/meta
info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/0909.4738
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
dc.publisher.none.fl_str_mv IOP Publishing
publisher.none.fl_str_mv IOP Publishing
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 13.22299

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