ORFEES – a radio spectrograph for the study of solar radio bursts and space weather applications
Radio bursts are sensitive tracers of non-thermal electron populations in the solar corona. They are produced by electron beams and shock waves propagating through the corona and the heliosphere, and by trapped electron populations in coronal mass ejections (CMEs) and in quiescent active regions. Co...
| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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EDP Sciences
2021-01-01
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| Series: | Journal of Space Weather and Space Climate |
| Subjects: | |
| Online Access: | https://www.swsc-journal.org/articles/swsc/full_html/2021/01/swsc210035/swsc210035.html |
| _version_ | 1818993527950934016 |
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| author | Hamini Abdallah Auxepaules Gabriel Birée Lionel Kenfack Guy Kerdraon Alain Klein Karl-Ludwig Lespagnol Patrice Masson Sophie Coutouly Lucile Fabrice Christian Romagnan Renaud |
| author_facet | Hamini Abdallah Auxepaules Gabriel Birée Lionel Kenfack Guy Kerdraon Alain Klein Karl-Ludwig Lespagnol Patrice Masson Sophie Coutouly Lucile Fabrice Christian Romagnan Renaud |
| author_sort | Hamini Abdallah |
| collection | DOAJ |
| description | Radio bursts are sensitive tracers of non-thermal electron populations in the solar corona. They are produced by electron beams and shock waves propagating through the corona and the heliosphere, and by trapped electron populations in coronal mass ejections (CMEs) and in quiescent active regions. Combining space-borne and ground-based radio spectrographs allows one to track disturbances between the low corona, near or at the sites of particle acceleration, and the spacecraft. Radio observations are, therefore, a significant tool in probing the solar origin of heliospheric disturbances, which is a central research topic as witnessed by the Parker Solar Probe and Solar Orbiter missions. The full scientific return of these projects needs vigorous ground-based support, which at radio wavelengths covers altitudes up to about a solar radius above the photosphere. Besides research in solar and heliospheric physics, monitoring solar radio bursts also supports space weather services. On occasion, radio bursts can themselves be a space weather hazard. The Nançay radio astronomy station in central France has a long tradition of monitoring radio emission at decimetre-to-meter wavelengths. This article describes the radio spectrograph ORFEES (Observations Radiospectrographiques pour FEDOME et l’Etude des Eruptions Solaires). It observes the whole-Sun flux density between 144 and 1004 MHz, pertaining to regions between the low corona and about half a solar radius above the photosphere. ORFEES results from a partnership between Observatoire de Paris and the French Air Force, which operates the experimental space weather service FEDOME. The primary use of the instrument at the Paris Observatory is astrophysical observation. Low-resolution data with rapid availability are presently produced for the French Air Force. Similar information can be made available to a broader range of space weather service providers. This article gives an overview of the instrument design and access to the data and shows a few illustrative observations. |
| first_indexed | 2024-12-20T20:43:29Z |
| format | Article |
| id | doaj.art-75f5e633f1d143069d671330d8722cfd |
| institution | Directory Open Access Journal |
| issn | 2115-7251 |
| language | English |
| last_indexed | 2024-12-20T20:43:29Z |
| publishDate | 2021-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | Journal of Space Weather and Space Climate |
| spelling | doaj.art-75f5e633f1d143069d671330d8722cfd2022-12-21T19:27:06ZengEDP SciencesJournal of Space Weather and Space Climate2115-72512021-01-01115710.1051/swsc/2021039swsc210035ORFEES – a radio spectrograph for the study of solar radio bursts and space weather applicationsHamini AbdallahAuxepaules Gabriel0Birée Lionel1Kenfack Guy2Kerdraon Alain3Klein Karl-LudwigLespagnol Patrice4Masson SophieCoutouly Lucile5Fabrice Christian6Romagnan Renaud7Station de radioastronomie de Nançay, Univ. PSL, CNRS, Univ. d’OrléansCommandement de l’Espace/Centre Opérationnel de Surveillance Militaire des Objets SpatiauxStation de radioastronomie de Nançay, Univ. PSL, CNRS, Univ. d’OrléansObservatoire de Paris, LESIA, Univ. PSL, CNRS, Sorbonne Univ., Univ. de ParisStation de radioastronomie de Nançay, Univ. PSL, CNRS, Univ. d’OrléansStation de radioastronomie de Nançay, Univ. PSL, CNRS, Univ. d’OrléansStation de radioastronomie de Nançay, Univ. PSL, CNRS, Univ. d’OrléansObservatoire de Paris, LESIA, Univ. PSL, CNRS, Sorbonne Univ., Univ. de ParisRadio bursts are sensitive tracers of non-thermal electron populations in the solar corona. They are produced by electron beams and shock waves propagating through the corona and the heliosphere, and by trapped electron populations in coronal mass ejections (CMEs) and in quiescent active regions. Combining space-borne and ground-based radio spectrographs allows one to track disturbances between the low corona, near or at the sites of particle acceleration, and the spacecraft. Radio observations are, therefore, a significant tool in probing the solar origin of heliospheric disturbances, which is a central research topic as witnessed by the Parker Solar Probe and Solar Orbiter missions. The full scientific return of these projects needs vigorous ground-based support, which at radio wavelengths covers altitudes up to about a solar radius above the photosphere. Besides research in solar and heliospheric physics, monitoring solar radio bursts also supports space weather services. On occasion, radio bursts can themselves be a space weather hazard. The Nançay radio astronomy station in central France has a long tradition of monitoring radio emission at decimetre-to-meter wavelengths. This article describes the radio spectrograph ORFEES (Observations Radiospectrographiques pour FEDOME et l’Etude des Eruptions Solaires). It observes the whole-Sun flux density between 144 and 1004 MHz, pertaining to regions between the low corona and about half a solar radius above the photosphere. ORFEES results from a partnership between Observatoire de Paris and the French Air Force, which operates the experimental space weather service FEDOME. The primary use of the instrument at the Paris Observatory is astrophysical observation. Low-resolution data with rapid availability are presently produced for the French Air Force. Similar information can be made available to a broader range of space weather service providers. This article gives an overview of the instrument design and access to the data and shows a few illustrative observations.https://www.swsc-journal.org/articles/swsc/full_html/2021/01/swsc210035/swsc210035.htmlastronomical instrumentationmethods and techniquessun: activitysun: coronasun: coronal mass ejections (cmes)sun: radio radiation |
| spellingShingle | Hamini Abdallah Auxepaules Gabriel Birée Lionel Kenfack Guy Kerdraon Alain Klein Karl-Ludwig Lespagnol Patrice Masson Sophie Coutouly Lucile Fabrice Christian Romagnan Renaud ORFEES – a radio spectrograph for the study of solar radio bursts and space weather applications Journal of Space Weather and Space Climate astronomical instrumentation methods and techniques sun: activity sun: corona sun: coronal mass ejections (cmes) sun: radio radiation |
| title | ORFEES – a radio spectrograph for the study of solar radio bursts and space weather applications |
| title_full | ORFEES – a radio spectrograph for the study of solar radio bursts and space weather applications |
| title_fullStr | ORFEES – a radio spectrograph for the study of solar radio bursts and space weather applications |
| title_full_unstemmed | ORFEES – a radio spectrograph for the study of solar radio bursts and space weather applications |
| title_short | ORFEES – a radio spectrograph for the study of solar radio bursts and space weather applications |
| title_sort | orfees a radio spectrograph for the study of solar radio bursts and space weather applications |
| topic | astronomical instrumentation methods and techniques sun: activity sun: corona sun: coronal mass ejections (cmes) sun: radio radiation |
| url | https://www.swsc-journal.org/articles/swsc/full_html/2021/01/swsc210035/swsc210035.html |
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