Time-dependent global MHD simulations of Cassini T32 flyby: From magnetosphere to magnetosheath

Autores
Ma, Y. J.; Russell, C. T.; Nagy, A. F.; Toth, G.; Bertucci, Cesar; Dougherty, M. K.; Neubauer, F. M.; Wellbrock, A.; Coates, A. J.; Garnier, P.; Wahlund, J. E.; Cravens, T. E.; Crary, F. J.
Año de publicación
2009
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
When the Cassini spacecraft flew by Titan on 13 June 2007, at 13.6 Saturn local time, Titan was directly observed to be outside Saturn′s magnetopause. Cassini observations showed dramatic changes of magnetic field orientation as well as other plasma flow parameters during the inbound and outbound segments. In this paper, we study Titan's ionospheric responses to such a sudden change in the upstream plasma conditions using a sophisticated multispecies global MHD model. Simulation results of three different cases (steady state, simple current sheet crossing, and magnetopause crossing) are presented and compared against Cassini Magnetometer, Langmuir Probe, and Cassini Plasma Spectrometer observations. The simulation results provide clear evidence for the existence of a fossil field that was induced in the ionosphere. The main interaction features, as observed by the Cassini spacecraft, are well reproduced by the time-dependent simulation cases. Simulation also reveals how the fossil field was trapped during the interaction and shows the coexistence of two pileup regions with opposite magnetic orientation, as well as the formation of a pair of new Alfven wings and tail disconnection during the magnetopause crossing process.
Fil: Ma, Y. J.. University of California; Estados Unidos
Fil: Russell, C. T.. University of California; Estados Unidos
Fil: Nagy, A. F.. University of Michigan; Estados Unidos
Fil: Toth, G.. University of Michigan; Estados Unidos
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: Dougherty, M. K.. Imperial College London; Reino Unido
Fil: Neubauer, F. M.. University of Cologne; Alemania
Fil: Wellbrock, A.. University College London; Estados Unidos
Fil: Coates, A. J.. University College London; Estados Unidos
Fil: Garnier, P.. Swedish Institute of Space Physics; Suecia
Fil: Wahlund, J. E.. Swedish Institute of Space Physics; Suecia
Fil: Cravens, T. E.. University of Kansas; Estados Unidos
Fil: Crary, F. J.. Southwest Research Institute; Estados Unidos
Materia
Titan
Interaction
MHD
Simulation
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/20531
Acceder
id CONICETDig_2a950badf2cff57b6278401c14309584
oai_identifier_str oai:ri.conicet.gov.ar:11336/20531
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Time-dependent global MHD simulations of Cassini T32 flyby: From magnetosphere to magnetosheathMa, Y. J.Russell, C. T.Nagy, A. F.Toth, G.Bertucci, CesarDougherty, M. K.Neubauer, F. M.Wellbrock, A.Coates, A. J.Garnier, P.Wahlund, J. E.Cravens, T. E.Crary, F. J.TitanInteractionMHDSimulationhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1When the Cassini spacecraft flew by Titan on 13 June 2007, at 13.6 Saturn local time, Titan was directly observed to be outside Saturn′s magnetopause. Cassini observations showed dramatic changes of magnetic field orientation as well as other plasma flow parameters during the inbound and outbound segments. In this paper, we study Titan's ionospheric responses to such a sudden change in the upstream plasma conditions using a sophisticated multispecies global MHD model. Simulation results of three different cases (steady state, simple current sheet crossing, and magnetopause crossing) are presented and compared against Cassini Magnetometer, Langmuir Probe, and Cassini Plasma Spectrometer observations. The simulation results provide clear evidence for the existence of a fossil field that was induced in the ionosphere. The main interaction features, as observed by the Cassini spacecraft, are well reproduced by the time-dependent simulation cases. Simulation also reveals how the fossil field was trapped during the interaction and shows the coexistence of two pileup regions with opposite magnetic orientation, as well as the formation of a pair of new Alfven wings and tail disconnection during the magnetopause crossing process.Fil: Ma, Y. J.. University of California; Estados UnidosFil: Russell, C. T.. University of California; Estados UnidosFil: Nagy, A. F.. University of Michigan; Estados UnidosFil: Toth, G.. University of Michigan; Estados UnidosFil: 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: Dougherty, M. K.. Imperial College London; Reino UnidoFil: Neubauer, F. M.. University of Cologne; AlemaniaFil: Wellbrock, A.. University College London; Estados UnidosFil: Coates, A. J.. University College London; Estados UnidosFil: Garnier, P.. Swedish Institute of Space Physics; SueciaFil: Wahlund, J. E.. Swedish Institute of Space Physics; SueciaFil: Cravens, T. E.. University of Kansas; Estados UnidosFil: Crary, F. J.. Southwest Research Institute; Estados UnidosAmerican Geophysical Union2009-03-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/20531Ma, Y. J.; Russell, C. T.; Nagy, A. F.; Toth, G.; Bertucci, Cesar; et al.; Time-dependent global MHD simulations of Cassini T32 flyby: From magnetosphere to magnetosheath; American Geophysical Union; Journal of Geophysical Research; 114; A03204; 07-3-2009; 1-130148-0227CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1029/2008JA013676/fullinfo:eu-repo/semantics/altIdentifier/doi/10.1029/2008JA013676info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:41:23Zoai:ri.conicet.gov.ar:11336/20531instacron: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:34982025-09-29 10:41:23.368CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Time-dependent global MHD simulations of Cassini T32 flyby: From magnetosphere to magnetosheath
title Time-dependent global MHD simulations of Cassini T32 flyby: From magnetosphere to magnetosheath
spellingShingle Time-dependent global MHD simulations of Cassini T32 flyby: From magnetosphere to magnetosheath
Ma, Y. J.
Titan
Interaction
MHD
Simulation
title_short Time-dependent global MHD simulations of Cassini T32 flyby: From magnetosphere to magnetosheath
title_full Time-dependent global MHD simulations of Cassini T32 flyby: From magnetosphere to magnetosheath
title_fullStr Time-dependent global MHD simulations of Cassini T32 flyby: From magnetosphere to magnetosheath
title_full_unstemmed Time-dependent global MHD simulations of Cassini T32 flyby: From magnetosphere to magnetosheath
title_sort Time-dependent global MHD simulations of Cassini T32 flyby: From magnetosphere to magnetosheath
dc.creator.none.fl_str_mv Ma, Y. J.
Russell, C. T.
Nagy, A. F.
Toth, G.
Bertucci, Cesar
Dougherty, M. K.
Neubauer, F. M.
Wellbrock, A.
Coates, A. J.
Garnier, P.
Wahlund, J. E.
Cravens, T. E.
Crary, F. J.
author Ma, Y. J.
author_facet Ma, Y. J.
Russell, C. T.
Nagy, A. F.
Toth, G.
Bertucci, Cesar
Dougherty, M. K.
Neubauer, F. M.
Wellbrock, A.
Coates, A. J.
Garnier, P.
Wahlund, J. E.
Cravens, T. E.
Crary, F. J.
author_role author
author2 Russell, C. T.
Nagy, A. F.
Toth, G.
Bertucci, Cesar
Dougherty, M. K.
Neubauer, F. M.
Wellbrock, A.
Coates, A. J.
Garnier, P.
Wahlund, J. E.
Cravens, T. E.
Crary, F. J.
author2_role author
author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Titan
Interaction
MHD
Simulation
topic Titan
Interaction
MHD
Simulation
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv When the Cassini spacecraft flew by Titan on 13 June 2007, at 13.6 Saturn local time, Titan was directly observed to be outside Saturn′s magnetopause. Cassini observations showed dramatic changes of magnetic field orientation as well as other plasma flow parameters during the inbound and outbound segments. In this paper, we study Titan's ionospheric responses to such a sudden change in the upstream plasma conditions using a sophisticated multispecies global MHD model. Simulation results of three different cases (steady state, simple current sheet crossing, and magnetopause crossing) are presented and compared against Cassini Magnetometer, Langmuir Probe, and Cassini Plasma Spectrometer observations. The simulation results provide clear evidence for the existence of a fossil field that was induced in the ionosphere. The main interaction features, as observed by the Cassini spacecraft, are well reproduced by the time-dependent simulation cases. Simulation also reveals how the fossil field was trapped during the interaction and shows the coexistence of two pileup regions with opposite magnetic orientation, as well as the formation of a pair of new Alfven wings and tail disconnection during the magnetopause crossing process.
Fil: Ma, Y. J.. University of California; Estados Unidos
Fil: Russell, C. T.. University of California; Estados Unidos
Fil: Nagy, A. F.. University of Michigan; Estados Unidos
Fil: Toth, G.. University of Michigan; Estados Unidos
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: Dougherty, M. K.. Imperial College London; Reino Unido
Fil: Neubauer, F. M.. University of Cologne; Alemania
Fil: Wellbrock, A.. University College London; Estados Unidos
Fil: Coates, A. J.. University College London; Estados Unidos
Fil: Garnier, P.. Swedish Institute of Space Physics; Suecia
Fil: Wahlund, J. E.. Swedish Institute of Space Physics; Suecia
Fil: Cravens, T. E.. University of Kansas; Estados Unidos
Fil: Crary, F. J.. Southwest Research Institute; Estados Unidos
description When the Cassini spacecraft flew by Titan on 13 June 2007, at 13.6 Saturn local time, Titan was directly observed to be outside Saturn′s magnetopause. Cassini observations showed dramatic changes of magnetic field orientation as well as other plasma flow parameters during the inbound and outbound segments. In this paper, we study Titan's ionospheric responses to such a sudden change in the upstream plasma conditions using a sophisticated multispecies global MHD model. Simulation results of three different cases (steady state, simple current sheet crossing, and magnetopause crossing) are presented and compared against Cassini Magnetometer, Langmuir Probe, and Cassini Plasma Spectrometer observations. The simulation results provide clear evidence for the existence of a fossil field that was induced in the ionosphere. The main interaction features, as observed by the Cassini spacecraft, are well reproduced by the time-dependent simulation cases. Simulation also reveals how the fossil field was trapped during the interaction and shows the coexistence of two pileup regions with opposite magnetic orientation, as well as the formation of a pair of new Alfven wings and tail disconnection during the magnetopause crossing process.
publishDate 2009
dc.date.none.fl_str_mv 2009-03-07
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/11336/20531
Ma, Y. J.; Russell, C. T.; Nagy, A. F.; Toth, G.; Bertucci, Cesar; et al.; Time-dependent global MHD simulations of Cassini T32 flyby: From magnetosphere to magnetosheath; American Geophysical Union; Journal of Geophysical Research; 114; A03204; 07-3-2009; 1-13
0148-0227
CONICET Digital
CONICET
url http://hdl.handle.net/11336/20531
identifier_str_mv Ma, Y. J.; Russell, C. T.; Nagy, A. F.; Toth, G.; Bertucci, Cesar; et al.; Time-dependent global MHD simulations of Cassini T32 flyby: From magnetosphere to magnetosheath; American Geophysical Union; Journal of Geophysical Research; 114; A03204; 07-3-2009; 1-13
0148-0227
CONICET Digital
CONICET
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/10.1029/2008JA013676/full
info:eu-repo/semantics/altIdentifier/doi/10.1029/2008JA013676
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv 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_ 1844614444483608576
score 13.070432

Publicaciones similares