3He-rich solar energetic particles from sunspot jets

Solar sources of suprathermal (<1 MeV nucleon−1) 3He-rich solar energetic particles (SEPs) have been commonly associated with jets originating in small, compact active regions at the periphery of near-equatorial coronal holes. Sources of relatively rare, high-energy (>10 MeV nucleon−1) 3He-ric...

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Authors: Bučík, Radoslav, Wiedenbeck, Mark E., Mason, Glenn M., Gómez Herrero, Raúl|||0000-0002-5705-9236, Nitta, Nariaki V., Wang, Linghua
Format: article
Publication Date:2018
Country:España
Institution:Universidad de Alcalá (UAH)
Repository:e_Buah Biblioteca Digital Universidad de Alcalá
Language:English
OAI Identifier:oai:ebuah.uah.es:10017/60417
Online Access:http://hdl.handle.net/10017/60417
https://dx.doi.org/10.3847/2041-8213/aaf37f
Access Level:Open access
Keyword:Acceleration of particles
Sun: flares
Sun: magnetic fields
Sun: particle emission
Sun: abundances
Física
Astronomía
Physics
Astronomy
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network_acronym_str ES
network_name_str España
repository_id_str
spelling 3He-rich solar energetic particles from sunspot jetsBučík, RadoslavWiedenbeck, Mark E.Mason, Glenn M.Gómez Herrero, Raúl|||0000-0002-5705-9236Nitta, Nariaki V.Wang, LinghuaAcceleration of particlesSun: flaresSun: magnetic fieldsSun: particle emissionSun: abundancesFísicaAstronomíaPhysicsAstronomySolar sources of suprathermal (<1 MeV nucleon−1) 3He-rich solar energetic particles (SEPs) have been commonly associated with jets originating in small, compact active regions at the periphery of near-equatorial coronal holes. Sources of relatively rare, high-energy (>10 MeV nucleon−1) 3He-rich SEPs remain unexplored. Here we present two of the most intense 3He-rich (3He/4He > 1) SEP events of the current solar cycle 24 measured on the Advanced Composition Explorer at energy >10 MeV nucleon−1. Although 3He shows high intensities, Z > 2 ions are below the detection threshold. The events are accompanied by type-III radio bursts, but no type-II emission as typically seen for suprathermal 3He-rich SEPs. The corresponding solar sources were analyzed using high-resolution, extreme-ultraviolet imaging and photospheric magnetic field observations on the Solar Dynamics Observatory. We find the sources of these events associated with jets originating at the boundary of large sunspots with complex βγδ magnetic configuration. Thus, details of the underlying photospheric field apparently are important to produce 3He to high energies in the examined events.Agencia Estatal de InvestigaciónMinisterio de Economía y CompetitividadThe American Astronomical Society20182018-12-12journal articlehttp://purl.org/coar/resource_type/c_6501NAhttp://purl.org/coar/version/c_be7fb7dd8ff6fe43info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10017/60417https://dx.doi.org/10.3847/2041-8213/aaf37freponame:e_Buah Biblioteca Digital Universidad de Alcaláinstname:Universidad de Alcalá (UAH)InglésengAgencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016 ESP2017-88436-R ENERGETIC PARTICLE DETECTOR EN SOLAR ORBITER: FASES D Y EMinisterio de Economía y Competitividad http://dx.doi.org/10.13039/501100003329 Not available ESP2015-68266-R DETECTOR DE PARTICULAS ENERGETICAS PARA SOLAR ORBITER IIIopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:ebuah.uah.es:10017/604172026-06-18T11:13:07Z
dc.title.none.fl_str_mv 3He-rich solar energetic particles from sunspot jets
title 3He-rich solar energetic particles from sunspot jets
spellingShingle 3He-rich solar energetic particles from sunspot jets
Bučík, Radoslav
Acceleration of particles
Sun: flares
Sun: magnetic fields
Sun: particle emission
Sun: abundances
Física
Astronomía
Physics
Astronomy
title_short 3He-rich solar energetic particles from sunspot jets
title_full 3He-rich solar energetic particles from sunspot jets
title_fullStr 3He-rich solar energetic particles from sunspot jets
title_full_unstemmed 3He-rich solar energetic particles from sunspot jets
title_sort 3He-rich solar energetic particles from sunspot jets
dc.creator.none.fl_str_mv Bučík, Radoslav
Wiedenbeck, Mark E.
Mason, Glenn M.
Gómez Herrero, Raúl|||0000-0002-5705-9236
Nitta, Nariaki V.
Wang, Linghua
author Bučík, Radoslav
author_facet Bučík, Radoslav
Wiedenbeck, Mark E.
Mason, Glenn M.
Gómez Herrero, Raúl|||0000-0002-5705-9236
Nitta, Nariaki V.
Wang, Linghua
author_role author
author2 Wiedenbeck, Mark E.
Mason, Glenn M.
Gómez Herrero, Raúl|||0000-0002-5705-9236
Nitta, Nariaki V.
Wang, Linghua
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Acceleration of particles
Sun: flares
Sun: magnetic fields
Sun: particle emission
Sun: abundances
Física
Astronomía
Physics
Astronomy
topic Acceleration of particles
Sun: flares
Sun: magnetic fields
Sun: particle emission
Sun: abundances
Física
Astronomía
Physics
Astronomy
description Solar sources of suprathermal (<1 MeV nucleon−1) 3He-rich solar energetic particles (SEPs) have been commonly associated with jets originating in small, compact active regions at the periphery of near-equatorial coronal holes. Sources of relatively rare, high-energy (>10 MeV nucleon−1) 3He-rich SEPs remain unexplored. Here we present two of the most intense 3He-rich (3He/4He > 1) SEP events of the current solar cycle 24 measured on the Advanced Composition Explorer at energy >10 MeV nucleon−1. Although 3He shows high intensities, Z > 2 ions are below the detection threshold. The events are accompanied by type-III radio bursts, but no type-II emission as typically seen for suprathermal 3He-rich SEPs. The corresponding solar sources were analyzed using high-resolution, extreme-ultraviolet imaging and photospheric magnetic field observations on the Solar Dynamics Observatory. We find the sources of these events associated with jets originating at the boundary of large sunspots with complex βγδ magnetic configuration. Thus, details of the underlying photospheric field apparently are important to produce 3He to high energies in the examined events.
publishDate 2018
dc.date.none.fl_str_mv 2018
2018-12-12
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
NA
http://purl.org/coar/version/c_be7fb7dd8ff6fe43
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10017/60417
https://dx.doi.org/10.3847/2041-8213/aaf37f
url http://hdl.handle.net/10017/60417
https://dx.doi.org/10.3847/2041-8213/aaf37f
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Agencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016 ESP2017-88436-R ENERGETIC PARTICLE DETECTOR EN SOLAR ORBITER: FASES D Y E
Ministerio de Economía y Competitividad http://dx.doi.org/10.13039/501100003329 Not available ESP2015-68266-R DETECTOR DE PARTICULAS ENERGETICAS PARA SOLAR ORBITER III
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv The American Astronomical Society
publisher.none.fl_str_mv The American Astronomical Society
dc.source.none.fl_str_mv reponame:e_Buah Biblioteca Digital Universidad de Alcalá
instname:Universidad de Alcalá (UAH)
instname_str Universidad de Alcalá (UAH)
reponame_str e_Buah Biblioteca Digital Universidad de Alcalá
collection e_Buah Biblioteca Digital Universidad de Alcalá
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,301603

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