A combined model of pressure variations in Titan's plasma environment

Autores
Achilleos, N.; Arridge, C. S.; Bertucci, Cesar; Guio, P.; Romanelli, Norberto Julio; Sergis, N.
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In order to analyze varying plasma conditions upstream of Titan, we have combined a physical model of Saturn?s plasma disk with a geometrical model of the oscillating current sheet. During modeled oscillation phases where Titan is farthest from the current sheet, the main sources of plasma pressure in the near-Titan space are the magnetic pressure and, for disturbed conditions, the hot plasma pressure. When Titan is at the center of the sheet, the main sources are the dynamic pressure associated with Saturn?s cold, subcorotating plasma and the hot plasma pressure under disturbed conditions. Total pressure at Titan (dynamic plus thermal plus magnetic) typically increases by a factor of up to about 3 as the current sheet center is approached. The predicted incident plasma flow direction deviates from the orbital plane of Titan by ≲ 10◦ . These results suggest a correlation between the location of magnetic pressure maxima and the oscillation phase of the plasma sheet. Our model may be used to predict near-Titan conditions from ?far-field? in situ measurements.
Fil: Achilleos, N.. University College London; Reino Unido
Fil: Arridge, C. S.. University College London; Reino Unido
Fil: Bertucci, Cesar. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
Fil: Guio, P.. University College London; Reino Unido
Fil: Romanelli, Norberto Julio. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
Fil: Sergis, N.. Academy Of Athens. Office for Space Research and Technology; Grecia
Materia
Titan's plasma environment responds to global changes in hot plasma pressure
Titan is exposed to highly variable upstream plasma beta and dynamic pressure
Including hot plasma variability improves agreement between models and data
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/17404
Acceder
id CONICETDig_223ea31e6b3430b2cb26d77abcc127d8
oai_identifier_str oai:ri.conicet.gov.ar:11336/17404
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling A combined model of pressure variations in Titan's plasma environmentAchilleos, N.Arridge, C. S.Bertucci, CesarGuio, P.Romanelli, Norberto JulioSergis, N.Titan's plasma environment responds to global changes in hot plasma pressureTitan is exposed to highly variable upstream plasma beta and dynamic pressureIncluding hot plasma variability improves agreement between models and datahttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1In order to analyze varying plasma conditions upstream of Titan, we have combined a physical model of Saturn?s plasma disk with a geometrical model of the oscillating current sheet. During modeled oscillation phases where Titan is farthest from the current sheet, the main sources of plasma pressure in the near-Titan space are the magnetic pressure and, for disturbed conditions, the hot plasma pressure. When Titan is at the center of the sheet, the main sources are the dynamic pressure associated with Saturn?s cold, subcorotating plasma and the hot plasma pressure under disturbed conditions. Total pressure at Titan (dynamic plus thermal plus magnetic) typically increases by a factor of up to about 3 as the current sheet center is approached. The predicted incident plasma flow direction deviates from the orbital plane of Titan by ≲ 10◦ . These results suggest a correlation between the location of magnetic pressure maxima and the oscillation phase of the plasma sheet. Our model may be used to predict near-Titan conditions from ?far-field? in situ measurements.Fil: Achilleos, N.. University College London; Reino UnidoFil: Arridge, C. S.. University College London; Reino UnidoFil: Bertucci, Cesar. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; ArgentinaFil: Guio, P.. University College London; Reino UnidoFil: Romanelli, Norberto Julio. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; ArgentinaFil: Sergis, N.. Academy Of Athens. Office for Space Research and Technology; GreciaAmerican Geophysical Union2014-12-29info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/17404Achilleos, N.; Arridge, C. S.; Bertucci, Cesar; Guio, P.; Romanelli, Norberto Julio; et al.; A combined model of pressure variations in Titan's plasma environment; American Geophysical Union; Geophysical Research Letters; 41; 24; 29-12-2014; 8730–87350094-8276enginfo:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1002/2014GL061747/abstractinfo:eu-repo/semantics/altIdentifier/doi/10.1002/2014GL061747info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:59:04Zoai:ri.conicet.gov.ar:11336/17404instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 09:59:05.113CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A combined model of pressure variations in Titan's plasma environment
title A combined model of pressure variations in Titan's plasma environment
spellingShingle A combined model of pressure variations in Titan's plasma environment
Achilleos, N.
Titan's plasma environment responds to global changes in hot plasma pressure
Titan is exposed to highly variable upstream plasma beta and dynamic pressure
Including hot plasma variability improves agreement between models and data
title_short A combined model of pressure variations in Titan's plasma environment
title_full A combined model of pressure variations in Titan's plasma environment
title_fullStr A combined model of pressure variations in Titan's plasma environment
title_full_unstemmed A combined model of pressure variations in Titan's plasma environment
title_sort A combined model of pressure variations in Titan's plasma environment
dc.creator.none.fl_str_mv Achilleos, N.
Arridge, C. S.
Bertucci, Cesar
Guio, P.
Romanelli, Norberto Julio
Sergis, N.
author Achilleos, N.
author_facet Achilleos, N.
Arridge, C. S.
Bertucci, Cesar
Guio, P.
Romanelli, Norberto Julio
Sergis, N.
author_role author
author2 Arridge, C. S.
Bertucci, Cesar
Guio, P.
Romanelli, Norberto Julio
Sergis, N.
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Titan's plasma environment responds to global changes in hot plasma pressure
Titan is exposed to highly variable upstream plasma beta and dynamic pressure
Including hot plasma variability improves agreement between models and data
topic Titan's plasma environment responds to global changes in hot plasma pressure
Titan is exposed to highly variable upstream plasma beta and dynamic pressure
Including hot plasma variability improves agreement between models and data
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv In order to analyze varying plasma conditions upstream of Titan, we have combined a physical model of Saturn?s plasma disk with a geometrical model of the oscillating current sheet. During modeled oscillation phases where Titan is farthest from the current sheet, the main sources of plasma pressure in the near-Titan space are the magnetic pressure and, for disturbed conditions, the hot plasma pressure. When Titan is at the center of the sheet, the main sources are the dynamic pressure associated with Saturn?s cold, subcorotating plasma and the hot plasma pressure under disturbed conditions. Total pressure at Titan (dynamic plus thermal plus magnetic) typically increases by a factor of up to about 3 as the current sheet center is approached. The predicted incident plasma flow direction deviates from the orbital plane of Titan by ≲ 10◦ . These results suggest a correlation between the location of magnetic pressure maxima and the oscillation phase of the plasma sheet. Our model may be used to predict near-Titan conditions from ?far-field? in situ measurements.
Fil: Achilleos, N.. University College London; Reino Unido
Fil: Arridge, C. S.. University College London; Reino Unido
Fil: Bertucci, Cesar. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
Fil: Guio, P.. University College London; Reino Unido
Fil: Romanelli, Norberto Julio. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
Fil: Sergis, N.. Academy Of Athens. Office for Space Research and Technology; Grecia
description In order to analyze varying plasma conditions upstream of Titan, we have combined a physical model of Saturn?s plasma disk with a geometrical model of the oscillating current sheet. During modeled oscillation phases where Titan is farthest from the current sheet, the main sources of plasma pressure in the near-Titan space are the magnetic pressure and, for disturbed conditions, the hot plasma pressure. When Titan is at the center of the sheet, the main sources are the dynamic pressure associated with Saturn?s cold, subcorotating plasma and the hot plasma pressure under disturbed conditions. Total pressure at Titan (dynamic plus thermal plus magnetic) typically increases by a factor of up to about 3 as the current sheet center is approached. The predicted incident plasma flow direction deviates from the orbital plane of Titan by ≲ 10◦ . These results suggest a correlation between the location of magnetic pressure maxima and the oscillation phase of the plasma sheet. Our model may be used to predict near-Titan conditions from ?far-field? in situ measurements.
publishDate 2014
dc.date.none.fl_str_mv 2014-12-29
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/17404
Achilleos, N.; Arridge, C. S.; Bertucci, Cesar; Guio, P.; Romanelli, Norberto Julio; et al.; A combined model of pressure variations in Titan's plasma environment; American Geophysical Union; Geophysical Research Letters; 41; 24; 29-12-2014; 8730–8735
0094-8276
url http://hdl.handle.net/11336/17404
identifier_str_mv Achilleos, N.; Arridge, C. S.; Bertucci, Cesar; Guio, P.; Romanelli, Norberto Julio; et al.; A combined model of pressure variations in Titan's plasma environment; American Geophysical Union; Geophysical Research Letters; 41; 24; 29-12-2014; 8730–8735
0094-8276
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1002/2014GL061747/abstract
info:eu-repo/semantics/altIdentifier/doi/10.1002/2014GL061747
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Geophysical Union
publisher.none.fl_str_mv American Geophysical Union
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1842269559839522816
score 13.13397

Publicaciones similares