The connection between internetwork magnetic elements and supergranular flows

The advection of internetwork magnetic elements by supergranular convective flows is investigated using high spatial resolution, high cadence, and high signal-to-noise ratio Na I D1 magnetograms obtained with the Hinode satellite. The observations show that magnetic elements appear everywhere across...

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Detalles Bibliográficos
Autores: Orozco Suárez, David, Katsukawa, Y., Bellot Rubio, Luis R.
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2012
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/415805
Acceso en línea:http://hdl.handle.net/10261/415805
Access Level:acceso abierto
Palabra clave:Convection
Polarization
Sun: photosphere
Sun: surface magnetism
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spelling The connection between internetwork magnetic elements and supergranular flowsOrozco Suárez, DavidKatsukawa, Y.Bellot Rubio, Luis R.ConvectionPolarizationSun: photosphereSun: surface magnetismThe advection of internetwork magnetic elements by supergranular convective flows is investigated using high spatial resolution, high cadence, and high signal-to-noise ratio Na I D1 magnetograms obtained with the Hinode satellite. The observations show that magnetic elements appear everywhere across the quiet Sun surface. We calculate the proper motion of these magnetic elements with the aid of a feature tracking algorithm. The results indicate that magnetic elements appearing in the interior of supergranules tend to drift toward the supergranular boundaries with a non-constant velocity. The azimuthally averaged radial velocities of the magnetic elements and of the supergranular flow, calculated from a local correlation tracking technique applied to Dopplergrams, are very similar. This suggests that, in the long term, surface magnetic elements are advected by supergranular flows, although on short timescales their very chaotic motions are driven mostly by granular flows and other processes. © © 2012. The American Astronomical Society. All rights reserved.The authors thank the Japan Society for the Promotion of Science (JSPS) for the financial support through the postdoc- toral fellowship program for foreign researchers. This work has been partly funded by the Spanish MICINN through projects AYA2011-29833-C06-04 and PCI2006-A7-0624, and by Junta de Andaluc´ıa through project P07-TEP-2687, including a per- centage from European FEDER funds. Hinode is a Japanese mission developed and launched by ISAS/JAXA, with NAOJ as domestic partner and NASA and STFC (UK) as international partners. It is operated by these agencies in cooperation with ESA and NSC (Norway). Use of NASA’s Astrophysical Data System is gratefully acknowledged.Peer reviewedIOP PublishingJapan Society for the Promotion of ScienceMinisterio de Ciencia e Innovación (España)Ministerio de Economía y Competitividad (España)Ministerio de Educación y Ciencia (España)Junta de AndalucíaEuropean CommissionJapan Aerospace Exploration AgencyNational Astronomical Observatory of JapanNASAScience and Technology Facilities Council (UK)European Space AgencyNorwegian Space AgencyConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202620262012info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/415805reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/MINECO//AYA2011-29833-C06-04info:eu-repo/grantAgreement/MEC//PCI2006-A7-0624http://dx.doi.org/10.1088/2041-8205/758/2/L38Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/4158052026-05-22T06:33:51Z
dc.title.none.fl_str_mv The connection between internetwork magnetic elements and supergranular flows
title The connection between internetwork magnetic elements and supergranular flows
spellingShingle The connection between internetwork magnetic elements and supergranular flows
Orozco Suárez, David
Convection
Polarization
Sun: photosphere
Sun: surface magnetism
title_short The connection between internetwork magnetic elements and supergranular flows
title_full The connection between internetwork magnetic elements and supergranular flows
title_fullStr The connection between internetwork magnetic elements and supergranular flows
title_full_unstemmed The connection between internetwork magnetic elements and supergranular flows
title_sort The connection between internetwork magnetic elements and supergranular flows
dc.creator.none.fl_str_mv Orozco Suárez, David
Katsukawa, Y.
Bellot Rubio, Luis R.
author Orozco Suárez, David
author_facet Orozco Suárez, David
Katsukawa, Y.
Bellot Rubio, Luis R.
author_role author
author2 Katsukawa, Y.
Bellot Rubio, Luis R.
author2_role author
author
dc.contributor.none.fl_str_mv Japan Society for the Promotion of Science
Ministerio de Ciencia e Innovación (España)
Ministerio de Economía y Competitividad (España)
Ministerio de Educación y Ciencia (España)
Junta de Andalucía
European Commission
Japan Aerospace Exploration Agency
National Astronomical Observatory of Japan
NASA
Science and Technology Facilities Council (UK)
European Space Agency
Norwegian Space Agency
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Convection
Polarization
Sun: photosphere
Sun: surface magnetism
topic Convection
Polarization
Sun: photosphere
Sun: surface magnetism
description The advection of internetwork magnetic elements by supergranular convective flows is investigated using high spatial resolution, high cadence, and high signal-to-noise ratio Na I D1 magnetograms obtained with the Hinode satellite. The observations show that magnetic elements appear everywhere across the quiet Sun surface. We calculate the proper motion of these magnetic elements with the aid of a feature tracking algorithm. The results indicate that magnetic elements appearing in the interior of supergranules tend to drift toward the supergranular boundaries with a non-constant velocity. The azimuthally averaged radial velocities of the magnetic elements and of the supergranular flow, calculated from a local correlation tracking technique applied to Dopplergrams, are very similar. This suggests that, in the long term, surface magnetic elements are advected by supergranular flows, although on short timescales their very chaotic motions are driven mostly by granular flows and other processes. © © 2012. The American Astronomical Society. All rights reserved.
publishDate 2012
dc.date.none.fl_str_mv 2012
2026
2026
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/415805
url http://hdl.handle.net/10261/415805
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/MINECO//AYA2011-29833-C06-04
info:eu-repo/grantAgreement/MEC//PCI2006-A7-0624
http://dx.doi.org/10.1088/2041-8205/758/2/L38
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv IOP Publishing
publisher.none.fl_str_mv IOP Publishing
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
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