Outflows at the edges of active regions: Contribution to solar wind formation?

Autores
Harra, L. K.; Sakao, T.; Mandrini, Cristina Hemilse; Hara, H.; Imada, S.; Young, P. R.; van Driel Gesztelyi, Lidia; Baker, D.
Año de publicación
2008
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The formation of the slow solar wind has been debated for many years. In this Letter we show evidence of persistent outflow at the edges of an active region as measured by the EUV Imaging Spectrometer on board Hinode. The Doppler velocity ranged between 20 and 50 km s^-1 and was consistent with a steady flow seen in the X-Ray Telescope. The latter showed steady, pulsing outflowing material and some transverse motions of the
loops. We analyze the magnetic field around the active region and produce a coronal magnetic field model. We determine from the latter that the outflow speeds adjusted for line-of-sight effects can reach over 100 km s^-1. We can interpret this outflow as expansion of loops that lie over the active region, which may either reconnect with neighboring large-scale loops or are likely to open to the interplanetary space. This material constitutes at
least part of the slow solar wind.
Fil: Harra, L. K.. Mullard Space Science Laboratory; Reino Unido
Fil: Sakao, T.. Institute of Space and Astronautical Science; Japón
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: Hara, H.. National Astronomical Observatory of Japan; Japón
Fil: Imada, S.. National Astronomical Observatory of Japan; Japón
Fil: Young, P. R.. Rutherford Appleton Laboratory; Reino Unido
Fil: van Driel Gesztelyi, Lidia. Centre National de la Recherche Scientifique. Observatoire de Paris; Francia
Fil: Baker, D.. Mullard Space Science Laboratory; Reino Unido
Materia
Sun; Magnetic Fields
Sun: Solar Wind
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:11336/21033
Acceder
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Outflows at the edges of active regions: Contribution to solar wind formation?Harra, L. K.Sakao, T.Mandrini, Cristina HemilseHara, H.Imada, S.Young, P. R.van Driel Gesztelyi, LidiaBaker, D.Sun; Magnetic FieldsSun: Solar Windhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1The formation of the slow solar wind has been debated for many years. In this Letter we show evidence of persistent outflow at the edges of an active region as measured by the EUV Imaging Spectrometer on board Hinode. The Doppler velocity ranged between 20 and 50 km s^-1 and was consistent with a steady flow seen in the X-Ray Telescope. The latter showed steady, pulsing outflowing material and some transverse motions of the<br />loops. We analyze the magnetic field around the active region and produce a coronal magnetic field model. We determine from the latter that the outflow speeds adjusted for line-of-sight effects can reach over 100 km s^-1. We can interpret this outflow as expansion of loops that lie over the active region, which may either reconnect with neighboring large-scale loops or are likely to open to the interplanetary space. This material constitutes at<br />least part of the slow solar wind.Fil: Harra, L. K.. Mullard Space Science Laboratory; Reino UnidoFil: Sakao, T.. Institute of Space and Astronautical Science; JapónFil: 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: Hara, H.. National Astronomical Observatory of Japan; JapónFil: Imada, S.. National Astronomical Observatory of Japan; JapónFil: Young, P. R.. Rutherford Appleton Laboratory; Reino UnidoFil: van Driel Gesztelyi, Lidia. Centre National de la Recherche Scientifique. Observatoire de Paris; FranciaFil: Baker, D.. Mullard Space Science Laboratory; Reino UnidoIOP Publishing2008-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/21033Harra, L. K.; Sakao, T.; Mandrini, Cristina Hemilse; Hara, H.; Imada, S.; et al.; Outflows at the edges of active regions: Contribution to solar wind formation?; IOP Publishing; Astrophysical Journal; 676; 2; 12-2008; 147-1500004-637XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1086/587485info:eu-repo/semantics/altIdentifier/doi/10.1086/587485info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:02:05Zoai:ri.conicet.gov.ar:11336/21033instacron: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:34982025-09-10 13:02:06.076CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Outflows at the edges of active regions: Contribution to solar wind formation?
title Outflows at the edges of active regions: Contribution to solar wind formation?
spellingShingle Outflows at the edges of active regions: Contribution to solar wind formation?
Harra, L. K.
Sun; Magnetic Fields
Sun: Solar Wind
title_short Outflows at the edges of active regions: Contribution to solar wind formation?
title_full Outflows at the edges of active regions: Contribution to solar wind formation?
title_fullStr Outflows at the edges of active regions: Contribution to solar wind formation?
title_full_unstemmed Outflows at the edges of active regions: Contribution to solar wind formation?
title_sort Outflows at the edges of active regions: Contribution to solar wind formation?
dc.creator.none.fl_str_mv Harra, L. K.
Sakao, T.
Mandrini, Cristina Hemilse
Hara, H.
Imada, S.
Young, P. R.
van Driel Gesztelyi, Lidia
Baker, D.
author Harra, L. K.
author_facet Harra, L. K.
Sakao, T.
Mandrini, Cristina Hemilse
Hara, H.
Imada, S.
Young, P. R.
van Driel Gesztelyi, Lidia
Baker, D.
author_role author
author2 Sakao, T.
Mandrini, Cristina Hemilse
Hara, H.
Imada, S.
Young, P. R.
van Driel Gesztelyi, Lidia
Baker, D.
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Sun; Magnetic Fields
Sun: Solar Wind
topic Sun; Magnetic Fields
Sun: Solar Wind
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The formation of the slow solar wind has been debated for many years. In this Letter we show evidence of persistent outflow at the edges of an active region as measured by the EUV Imaging Spectrometer on board Hinode. The Doppler velocity ranged between 20 and 50 km s^-1 and was consistent with a steady flow seen in the X-Ray Telescope. The latter showed steady, pulsing outflowing material and some transverse motions of the<br />loops. We analyze the magnetic field around the active region and produce a coronal magnetic field model. We determine from the latter that the outflow speeds adjusted for line-of-sight effects can reach over 100 km s^-1. We can interpret this outflow as expansion of loops that lie over the active region, which may either reconnect with neighboring large-scale loops or are likely to open to the interplanetary space. This material constitutes at<br />least part of the slow solar wind.
Fil: Harra, L. K.. Mullard Space Science Laboratory; Reino Unido
Fil: Sakao, T.. Institute of Space and Astronautical Science; Japón
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: Hara, H.. National Astronomical Observatory of Japan; Japón
Fil: Imada, S.. National Astronomical Observatory of Japan; Japón
Fil: Young, P. R.. Rutherford Appleton Laboratory; Reino Unido
Fil: van Driel Gesztelyi, Lidia. Centre National de la Recherche Scientifique. Observatoire de Paris; Francia
Fil: Baker, D.. Mullard Space Science Laboratory; Reino Unido
description The formation of the slow solar wind has been debated for many years. In this Letter we show evidence of persistent outflow at the edges of an active region as measured by the EUV Imaging Spectrometer on board Hinode. The Doppler velocity ranged between 20 and 50 km s^-1 and was consistent with a steady flow seen in the X-Ray Telescope. The latter showed steady, pulsing outflowing material and some transverse motions of the<br />loops. We analyze the magnetic field around the active region and produce a coronal magnetic field model. We determine from the latter that the outflow speeds adjusted for line-of-sight effects can reach over 100 km s^-1. We can interpret this outflow as expansion of loops that lie over the active region, which may either reconnect with neighboring large-scale loops or are likely to open to the interplanetary space. This material constitutes at<br />least part of the slow solar wind.
publishDate 2008
dc.date.none.fl_str_mv 2008-12
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/11336/21033
Harra, L. K.; Sakao, T.; Mandrini, Cristina Hemilse; Hara, H.; Imada, S.; et al.; Outflows at the edges of active regions: Contribution to solar wind formation?; IOP Publishing; Astrophysical Journal; 676; 2; 12-2008; 147-150
0004-637X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/21033
identifier_str_mv Harra, L. K.; Sakao, T.; Mandrini, Cristina Hemilse; Hara, H.; Imada, S.; et al.; Outflows at the edges of active regions: Contribution to solar wind formation?; IOP Publishing; Astrophysical Journal; 676; 2; 12-2008; 147-150
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/url/http://iopscience.iop.org/article/10.1086/587485
info:eu-repo/semantics/altIdentifier/doi/10.1086/587485
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 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 12.993085

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