The first SEPServer event catalogue 68-MeV solar proton events observed at 1 AU in 1996-2010
SEPServer is a three-year collaborative project funded by the seventh framework programme (FP7-SPACE) of the European Union. The objective of the project is to provide access to state-of-the-art observations and analysis tools for the scientific community on solar energetic particle (SEP) events and...
| Autores: | , , , , , , , , , , , , , , , , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2013 |
| País: | España |
| Institución: | Universidad de Barcelona |
| Repositorio: | Dipòsit Digital de la UB |
| OAI Identifier: | oai:diposit.ub.edu:2445/46687 |
| Acceso en línea: | https://hdl.handle.net/2445/46687 |
| Access Level: | acceso abierto |
| Palabra clave: | Sol Partícules (Física nuclear) Radiació solar Electromagnetisme Sun Particles (Nuclear physics) Solar radiation Electromagnetism |
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The first SEPServer event catalogue 68-MeV solar proton events observed at 1 AU in 1996-2010Vainio, RamiValtonen, EinoHeber, BerndMalandraki, Olga E.Papaioannou, AthanasiosKlein, Karl-LudwigAfanasiev, AlexandrAgueda Costafreda, NeusAurass, HenryBattarbee, MarkusBraune, StephanDröge, WolfgangGanse, UrsHamadache, ClarisseHeynderickx, DanielHuttunen-Heikinmaa, KalleKiener, JürgenKilian, PatrickKopp, AndreasSanahuja i Parera, BlaiSolPartícules (Física nuclear)Radiació solarElectromagnetismeSunParticles (Nuclear physics)Solar radiationElectromagnetismSEPServer is a three-year collaborative project funded by the seventh framework programme (FP7-SPACE) of the European Union. The objective of the project is to provide access to state-of-the-art observations and analysis tools for the scientific community on solar energetic particle (SEP) events and related electromagnetic (EM) emissions. The project will eventually lead to better understanding of the particle acceleration and transport processes at the Sun and in the inner heliosphere. These processes lead to SEP events that form one of the key elements of space weather. In this paper we present the first results from the systematic analysis work performed on the following datasets: SOHO/ERNE, SOHO/EPHIN, ACE/EPAM, Wind/WAVES and GOES X-rays. A catalogue of SEP events at 1 AU, with complete coverage over solar cycle 23, based on high-energy (~68-MeV) protons from SOHO/ERNE and electron recordings of the events by SOHO/EPHIN and ACE/EPAM are presented. A total of 115 energetic particle events have been identified and analysed using velocity dispersion analysis (VDA) for protons and time-shifting analysis (TSA) for electrons and protons in order to infer the SEP release times at the Sun. EM observations during the times of the SEP event onset have been gathered and compared to the release time estimates of particles. Data from those events that occurred during the European day-time, i.e., those that also have observations from ground-based observatories included in SEPServer, are listed and a preliminary analysis of their associations is presented. We find that VDA results for protons can be a useful tool for the analysis of proton release times, but if the derived proton path length is out of a range of 1 AU < s[3 AU, the result of the analysis may be compromised, as indicated by the anti-correlation of the derived path length and release time delay from the asso ciated X-ray flare. The average path length derived from VDA is about 1.9 times the nominal length of the spiral magnetic field line. This implies that the path length of first-arriving MeV to deka-MeV protons is affected by interplanetary scattering. TSA of near-relativistic electrons results in a release time that shows significant scatter with respect to the EM emissions but with a trend of being delayed more with increasing distance between the flare and the nominal footpoint of the Earth-connected field line.EDP Sciences2013info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/46687Articles publicats en revistes (Física Quàntica i Astrofísica)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésReproducció del document publicat a: http://dx.doi.org/10.1051/swsc/2013030Journal of Space Weather and Space Climate, 2013, vol. 3, num. A12, p. 1-17http://dx.doi.org/10.1051/swsc/2013030info:eu-repo/grantAgreement/EC/FP7/262773cc-by-nc (c) Vainio, Rami et al., 2013http://creativecommons.org/licenses/by-nc/3.0/esinfo:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/466872026-05-27T06:46:51Z |
| dc.title.none.fl_str_mv |
The first SEPServer event catalogue 68-MeV solar proton events observed at 1 AU in 1996-2010 |
| title |
The first SEPServer event catalogue 68-MeV solar proton events observed at 1 AU in 1996-2010 |
| spellingShingle |
The first SEPServer event catalogue 68-MeV solar proton events observed at 1 AU in 1996-2010 Vainio, Rami Sol Partícules (Física nuclear) Radiació solar Electromagnetisme Sun Particles (Nuclear physics) Solar radiation Electromagnetism |
| title_short |
The first SEPServer event catalogue 68-MeV solar proton events observed at 1 AU in 1996-2010 |
| title_full |
The first SEPServer event catalogue 68-MeV solar proton events observed at 1 AU in 1996-2010 |
| title_fullStr |
The first SEPServer event catalogue 68-MeV solar proton events observed at 1 AU in 1996-2010 |
| title_full_unstemmed |
The first SEPServer event catalogue 68-MeV solar proton events observed at 1 AU in 1996-2010 |
| title_sort |
The first SEPServer event catalogue 68-MeV solar proton events observed at 1 AU in 1996-2010 |
| dc.creator.none.fl_str_mv |
Vainio, Rami Valtonen, Eino Heber, Bernd Malandraki, Olga E. Papaioannou, Athanasios Klein, Karl-Ludwig Afanasiev, Alexandr Agueda Costafreda, Neus Aurass, Henry Battarbee, Markus Braune, Stephan Dröge, Wolfgang Ganse, Urs Hamadache, Clarisse Heynderickx, Daniel Huttunen-Heikinmaa, Kalle Kiener, Jürgen Kilian, Patrick Kopp, Andreas Sanahuja i Parera, Blai |
| author |
Vainio, Rami |
| author_facet |
Vainio, Rami Valtonen, Eino Heber, Bernd Malandraki, Olga E. Papaioannou, Athanasios Klein, Karl-Ludwig Afanasiev, Alexandr Agueda Costafreda, Neus Aurass, Henry Battarbee, Markus Braune, Stephan Dröge, Wolfgang Ganse, Urs Hamadache, Clarisse Heynderickx, Daniel Huttunen-Heikinmaa, Kalle Kiener, Jürgen Kilian, Patrick Kopp, Andreas Sanahuja i Parera, Blai |
| author_role |
author |
| author2 |
Valtonen, Eino Heber, Bernd Malandraki, Olga E. Papaioannou, Athanasios Klein, Karl-Ludwig Afanasiev, Alexandr Agueda Costafreda, Neus Aurass, Henry Battarbee, Markus Braune, Stephan Dröge, Wolfgang Ganse, Urs Hamadache, Clarisse Heynderickx, Daniel Huttunen-Heikinmaa, Kalle Kiener, Jürgen Kilian, Patrick Kopp, Andreas Sanahuja i Parera, Blai |
| author2_role |
author author author author author author author author author author author author author author author author author author author |
| dc.subject.none.fl_str_mv |
Sol Partícules (Física nuclear) Radiació solar Electromagnetisme Sun Particles (Nuclear physics) Solar radiation Electromagnetism |
| topic |
Sol Partícules (Física nuclear) Radiació solar Electromagnetisme Sun Particles (Nuclear physics) Solar radiation Electromagnetism |
| description |
SEPServer is a three-year collaborative project funded by the seventh framework programme (FP7-SPACE) of the European Union. The objective of the project is to provide access to state-of-the-art observations and analysis tools for the scientific community on solar energetic particle (SEP) events and related electromagnetic (EM) emissions. The project will eventually lead to better understanding of the particle acceleration and transport processes at the Sun and in the inner heliosphere. These processes lead to SEP events that form one of the key elements of space weather. In this paper we present the first results from the systematic analysis work performed on the following datasets: SOHO/ERNE, SOHO/EPHIN, ACE/EPAM, Wind/WAVES and GOES X-rays. A catalogue of SEP events at 1 AU, with complete coverage over solar cycle 23, based on high-energy (~68-MeV) protons from SOHO/ERNE and electron recordings of the events by SOHO/EPHIN and ACE/EPAM are presented. A total of 115 energetic particle events have been identified and analysed using velocity dispersion analysis (VDA) for protons and time-shifting analysis (TSA) for electrons and protons in order to infer the SEP release times at the Sun. EM observations during the times of the SEP event onset have been gathered and compared to the release time estimates of particles. Data from those events that occurred during the European day-time, i.e., those that also have observations from ground-based observatories included in SEPServer, are listed and a preliminary analysis of their associations is presented. We find that VDA results for protons can be a useful tool for the analysis of proton release times, but if the derived proton path length is out of a range of 1 AU < s[3 AU, the result of the analysis may be compromised, as indicated by the anti-correlation of the derived path length and release time delay from the asso ciated X-ray flare. The average path length derived from VDA is about 1.9 times the nominal length of the spiral magnetic field line. This implies that the path length of first-arriving MeV to deka-MeV protons is affected by interplanetary scattering. TSA of near-relativistic electrons results in a release time that shows significant scatter with respect to the EM emissions but with a trend of being delayed more with increasing distance between the flare and the nominal footpoint of the Earth-connected field line. |
| publishDate |
2013 |
| dc.date.none.fl_str_mv |
2013 |
| 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/2445/46687 |
| url |
https://hdl.handle.net/2445/46687 |
| dc.language.none.fl_str_mv |
Inglés |
| language_invalid_str_mv |
Inglés |
| dc.relation.none.fl_str_mv |
Reproducció del document publicat a: http://dx.doi.org/10.1051/swsc/2013030 Journal of Space Weather and Space Climate, 2013, vol. 3, num. A12, p. 1-17 http://dx.doi.org/10.1051/swsc/2013030 info:eu-repo/grantAgreement/EC/FP7/262773 |
| dc.rights.none.fl_str_mv |
cc-by-nc (c) Vainio, Rami et al., 2013 http://creativecommons.org/licenses/by-nc/3.0/es info:eu-repo/semantics/openAccess |
| rights_invalid_str_mv |
cc-by-nc (c) Vainio, Rami et al., 2013 http://creativecommons.org/licenses/by-nc/3.0/es |
| eu_rights_str_mv |
openAccess |
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application/pdf |
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EDP Sciences |
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EDP Sciences |
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Articles publicats en revistes (Física Quàntica i Astrofísica) reponame:Dipòsit Digital de la UB instname:Universidad de Barcelona |
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Universidad de Barcelona |
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Dipòsit Digital de la UB |
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Dipòsit Digital de la UB |
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