High-energy (> 40 MeV) proton intensity enhancements associated with the passage of interplanetary shocks at 1 au

We analyze periods with elevated >40 MeV proton intensities observed near Earth over a time span of 43 yr (1973-2016) that coincide with the passage of interplanetary (IP) shocks. Typically, elevated proton intensities result from large solar energetic particle (SEP) events. The IP shocks observe...

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Autores: Lario, David, Richardson, Ian G., Aran i Sensat, Maria dels Àngels, Wijsen, Nicolas
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2023
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/200165
Acceso en línea:https://hdl.handle.net/2445/200165
Access Level:acceso abierto
Palabra clave:Camps magnètics interplanetaris
Protons
Vent solar
Interplanetary magnetic fields
Solar wind
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spelling High-energy (> 40 MeV) proton intensity enhancements associated with the passage of interplanetary shocks at 1 auLario, DavidRichardson, Ian G.Aran i Sensat, Maria dels ÀngelsWijsen, NicolasCamps magnètics interplanetarisProtonsVent solarInterplanetary magnetic fieldsProtonsSolar windWe analyze periods with elevated >40 MeV proton intensities observed near Earth over a time span of 43 yr (1973-2016) that coincide with the passage of interplanetary (IP) shocks. Typically, elevated proton intensities result from large solar energetic particle (SEP) events. The IP shocks observed during these elevated-intensity periods may or may not be related to the origin of the SEP events. By choosing those cases when the shocks can be confidently associated with the solar eruption that generated the SEP event, we analyze the components of these SEP events that are localized in the vicinity of the shock (so-called 'energetic storm particles', ESPs), focusing on those events where the ESP component exceeds 40 MeV. We examine the interdependence of these high-energy ESPs with (i) the properties of the solar eruptions that generated the shocks and the SEP events, and (ii) the parameters of the shocks at their arrival at 1 au. The solar eruptions at the origin of the shocks producing >40 MeV proton ESP intensity enhancements are within ±50° longitude of central meridian and are associated with fast coronal mass ejections (plane-of-sky speeds ≳1000 km s−1). The ESP events with the largest >40 MeV proton intensity increases tend to occur when there are structures such as intervening IP coronal mass ejections and other unrelated shocks present in the solar wind through which the shock is propagating. Among the various local shock parameters considered, only the shock speed shows a certain degree of correlation with the observed ESP intensity increase.Institute of Physics (IOP)2023202320232023info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion25 p.application/pdfhttps://hdl.handle.net/2445/200165Articles publicats en revistes (Física Quàntica i Astrofísica)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésReproducció del document publicat a: https://doi.org/10.3847/1538-4357/acc9c5Astrophysical Journal, 2023, vol. 950, num. 89, p. 1-25https://doi.org/10.3847/1538-4357/acc9c5(c) American Astronomical Society, 2023info:eu-repo/semantics/openAccessoai:recercat.cat:2445/2001652026-05-29T05:05:01Z
dc.title.none.fl_str_mv High-energy (> 40 MeV) proton intensity enhancements associated with the passage of interplanetary shocks at 1 au
title High-energy (> 40 MeV) proton intensity enhancements associated with the passage of interplanetary shocks at 1 au
spellingShingle High-energy (> 40 MeV) proton intensity enhancements associated with the passage of interplanetary shocks at 1 au
Lario, David
Camps magnètics interplanetaris
Protons
Vent solar
Interplanetary magnetic fields
Protons
Solar wind
title_short High-energy (> 40 MeV) proton intensity enhancements associated with the passage of interplanetary shocks at 1 au
title_full High-energy (> 40 MeV) proton intensity enhancements associated with the passage of interplanetary shocks at 1 au
title_fullStr High-energy (> 40 MeV) proton intensity enhancements associated with the passage of interplanetary shocks at 1 au
title_full_unstemmed High-energy (> 40 MeV) proton intensity enhancements associated with the passage of interplanetary shocks at 1 au
title_sort High-energy (> 40 MeV) proton intensity enhancements associated with the passage of interplanetary shocks at 1 au
dc.creator.none.fl_str_mv Lario, David
Richardson, Ian G.
Aran i Sensat, Maria dels Àngels
Wijsen, Nicolas
author Lario, David
author_facet Lario, David
Richardson, Ian G.
Aran i Sensat, Maria dels Àngels
Wijsen, Nicolas
author_role author
author2 Richardson, Ian G.
Aran i Sensat, Maria dels Àngels
Wijsen, Nicolas
author2_role author
author
author
dc.subject.none.fl_str_mv Camps magnètics interplanetaris
Protons
Vent solar
Interplanetary magnetic fields
Protons
Solar wind
topic Camps magnètics interplanetaris
Protons
Vent solar
Interplanetary magnetic fields
Protons
Solar wind
description We analyze periods with elevated >40 MeV proton intensities observed near Earth over a time span of 43 yr (1973-2016) that coincide with the passage of interplanetary (IP) shocks. Typically, elevated proton intensities result from large solar energetic particle (SEP) events. The IP shocks observed during these elevated-intensity periods may or may not be related to the origin of the SEP events. By choosing those cases when the shocks can be confidently associated with the solar eruption that generated the SEP event, we analyze the components of these SEP events that are localized in the vicinity of the shock (so-called 'energetic storm particles', ESPs), focusing on those events where the ESP component exceeds 40 MeV. We examine the interdependence of these high-energy ESPs with (i) the properties of the solar eruptions that generated the shocks and the SEP events, and (ii) the parameters of the shocks at their arrival at 1 au. The solar eruptions at the origin of the shocks producing >40 MeV proton ESP intensity enhancements are within ±50° longitude of central meridian and are associated with fast coronal mass ejections (plane-of-sky speeds ≳1000 km s−1). The ESP events with the largest >40 MeV proton intensity increases tend to occur when there are structures such as intervening IP coronal mass ejections and other unrelated shocks present in the solar wind through which the shock is propagating. Among the various local shock parameters considered, only the shock speed shows a certain degree of correlation with the observed ESP intensity increase.
publishDate 2023
dc.date.none.fl_str_mv 2023
2023
2023
2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/200165
url https://hdl.handle.net/2445/200165
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.3847/1538-4357/acc9c5
Astrophysical Journal, 2023, vol. 950, num. 89, p. 1-25
https://doi.org/10.3847/1538-4357/acc9c5
dc.rights.none.fl_str_mv (c) American Astronomical Society, 2023
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) American Astronomical Society, 2023
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 25 p.
application/pdf
dc.publisher.none.fl_str_mv Institute of Physics (IOP)
publisher.none.fl_str_mv Institute of Physics (IOP)
dc.source.none.fl_str_mv Articles publicats en revistes (Física Quàntica i Astrofísica)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812429

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