Titan's highly dynamic magnetic environment: A systematic survey of Cassini magnetometer observations from flybys TA-T62

Autores
Simon, Sven; Wennmacher, Alexandre; Neubauer, Fritz M.; Bertucci, Cesar; Kriegel, Hendrik; Saur, Joachim; Russell, Christopher T.; Dougherty, Michele K.
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We analyze the variability of the ambient magnetic field near Titan during Cassini encounters TA–T62 (October 2004–October 2009). Cassini magnetometer (MAG) data show that the moon's magnetic environment is strongly affected by its proximity to Saturn's warped and highly dynamic magnetodisk. In the nightside sector of Saturn's magnetosphere, the magnetic field near Titan is controlled by intense vertical flapping motions of the magnetodisk current sheet, alternately exposing the moon to radially stretched lobe-type fields and to more dipolar, but highly distorted current sheet fields. In southern summer, when most of the Cassini encounters took place, the magnetodisk current sheet was on average located above Titan's orbital plane. However, around equinox in August 2009, the distortions of Titan's magnetic environment due to the rapidly moving current sheet reached a maximum, thus suggesting that the equilibrium position of the sheet at that time was significantly closer to the moon's orbital plane. In the dayside magnetosphere, the formation of the magnetodisk lobes is partially suppressed due to the proximity of the magnetopause. Therefore, during most encounters that took place near noon, Titan was embedded in highly distorted current sheet fields. Within the framework of this study, we not only provide a systematic classification of all Titan flybys between October 2004 and October 2009 as lobe-type or current sheet scenarios, but we also calculate the magnetospheric background field near Titan's orbit whenever possible. Our results show that so far, there is not a single Cassini flyby that matches the frequently applied picture of Titan's plasma interaction from the pre-Cassini era (background field homogeneous, stationary and perpendicular to the moon's orbital plane). The time scales upon which the ambient magnetospheric field close to Titan undergoes significant changes range between only a few minutes and up to several hours. The implications for the development of numerical models for Titan's local plasma interaction are discussed as well.
Fil: Simon, Sven. University of Cologne; Alemania
Fil: Wennmacher, Alexandre. University of Cologne; Alemania
Fil: Neubauer, Fritz M.. University of Cologne; Alemania
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: Kriegel, Hendrik. University of California; Estados Unidos
Fil: Saur, Joachim. University of Cologne; Alemania
Fil: Russell, Christopher T.. University of California; Estados Unidos
Fil: Dougherty, Michele K.. Imperial College London; Reino Unido
Materia
Titan
Saturn'S Magnetosphere
Magnetodisk Current Sheet And Lobes
Plasma Interaction with Unmagnetized Bodies
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:11336/20156

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network_name_str CONICET Digital (CONICET)
spelling Titan's highly dynamic magnetic environment: A systematic survey of Cassini magnetometer observations from flybys TA-T62Simon, SvenWennmacher, AlexandreNeubauer, Fritz M.Bertucci, CesarKriegel, HendrikSaur, JoachimRussell, Christopher T.Dougherty, Michele K.TitanSaturn'S MagnetosphereMagnetodisk Current Sheet And LobesPlasma Interaction with Unmagnetized Bodieshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We analyze the variability of the ambient magnetic field near Titan during Cassini encounters TA–T62 (October 2004–October 2009). Cassini magnetometer (MAG) data show that the moon's magnetic environment is strongly affected by its proximity to Saturn's warped and highly dynamic magnetodisk. In the nightside sector of Saturn's magnetosphere, the magnetic field near Titan is controlled by intense vertical flapping motions of the magnetodisk current sheet, alternately exposing the moon to radially stretched lobe-type fields and to more dipolar, but highly distorted current sheet fields. In southern summer, when most of the Cassini encounters took place, the magnetodisk current sheet was on average located above Titan's orbital plane. However, around equinox in August 2009, the distortions of Titan's magnetic environment due to the rapidly moving current sheet reached a maximum, thus suggesting that the equilibrium position of the sheet at that time was significantly closer to the moon's orbital plane. In the dayside magnetosphere, the formation of the magnetodisk lobes is partially suppressed due to the proximity of the magnetopause. Therefore, during most encounters that took place near noon, Titan was embedded in highly distorted current sheet fields. Within the framework of this study, we not only provide a systematic classification of all Titan flybys between October 2004 and October 2009 as lobe-type or current sheet scenarios, but we also calculate the magnetospheric background field near Titan's orbit whenever possible. Our results show that so far, there is not a single Cassini flyby that matches the frequently applied picture of Titan's plasma interaction from the pre-Cassini era (background field homogeneous, stationary and perpendicular to the moon's orbital plane). The time scales upon which the ambient magnetospheric field close to Titan undergoes significant changes range between only a few minutes and up to several hours. The implications for the development of numerical models for Titan's local plasma interaction are discussed as well.Fil: Simon, Sven. University of Cologne; AlemaniaFil: Wennmacher, Alexandre. University of Cologne; AlemaniaFil: Neubauer, Fritz M.. University of Cologne; AlemaniaFil: 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: Kriegel, Hendrik. University of California; Estados UnidosFil: Saur, Joachim. University of Cologne; AlemaniaFil: Russell, Christopher T.. University of California; Estados UnidosFil: Dougherty, Michele K.. Imperial College London; Reino UnidoElsevier2010-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/20156Simon, Sven; Wennmacher, Alexandre; Neubauer, Fritz M.; Bertucci, Cesar; Kriegel, Hendrik; et al.; Titan's highly dynamic magnetic environment: A systematic survey of Cassini magnetometer observations from flybys TA-T62; Elsevier; Planetary and Space Science; 58; 10; 8-2010; 1230-12510032-0633CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.pss.2010.04.021info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0032063310001339info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:03:26Zoai:ri.conicet.gov.ar:11336/20156instacron: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 10:03:26.477CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Titan's highly dynamic magnetic environment: A systematic survey of Cassini magnetometer observations from flybys TA-T62
title Titan's highly dynamic magnetic environment: A systematic survey of Cassini magnetometer observations from flybys TA-T62
spellingShingle Titan's highly dynamic magnetic environment: A systematic survey of Cassini magnetometer observations from flybys TA-T62
Simon, Sven
Titan
Saturn'S Magnetosphere
Magnetodisk Current Sheet And Lobes
Plasma Interaction with Unmagnetized Bodies
title_short Titan's highly dynamic magnetic environment: A systematic survey of Cassini magnetometer observations from flybys TA-T62
title_full Titan's highly dynamic magnetic environment: A systematic survey of Cassini magnetometer observations from flybys TA-T62
title_fullStr Titan's highly dynamic magnetic environment: A systematic survey of Cassini magnetometer observations from flybys TA-T62
title_full_unstemmed Titan's highly dynamic magnetic environment: A systematic survey of Cassini magnetometer observations from flybys TA-T62
title_sort Titan's highly dynamic magnetic environment: A systematic survey of Cassini magnetometer observations from flybys TA-T62
dc.creator.none.fl_str_mv Simon, Sven
Wennmacher, Alexandre
Neubauer, Fritz M.
Bertucci, Cesar
Kriegel, Hendrik
Saur, Joachim
Russell, Christopher T.
Dougherty, Michele K.
author Simon, Sven
author_facet Simon, Sven
Wennmacher, Alexandre
Neubauer, Fritz M.
Bertucci, Cesar
Kriegel, Hendrik
Saur, Joachim
Russell, Christopher T.
Dougherty, Michele K.
author_role author
author2 Wennmacher, Alexandre
Neubauer, Fritz M.
Bertucci, Cesar
Kriegel, Hendrik
Saur, Joachim
Russell, Christopher T.
Dougherty, Michele K.
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Titan
Saturn'S Magnetosphere
Magnetodisk Current Sheet And Lobes
Plasma Interaction with Unmagnetized Bodies
topic Titan
Saturn'S Magnetosphere
Magnetodisk Current Sheet And Lobes
Plasma Interaction with Unmagnetized Bodies
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We analyze the variability of the ambient magnetic field near Titan during Cassini encounters TA–T62 (October 2004–October 2009). Cassini magnetometer (MAG) data show that the moon's magnetic environment is strongly affected by its proximity to Saturn's warped and highly dynamic magnetodisk. In the nightside sector of Saturn's magnetosphere, the magnetic field near Titan is controlled by intense vertical flapping motions of the magnetodisk current sheet, alternately exposing the moon to radially stretched lobe-type fields and to more dipolar, but highly distorted current sheet fields. In southern summer, when most of the Cassini encounters took place, the magnetodisk current sheet was on average located above Titan's orbital plane. However, around equinox in August 2009, the distortions of Titan's magnetic environment due to the rapidly moving current sheet reached a maximum, thus suggesting that the equilibrium position of the sheet at that time was significantly closer to the moon's orbital plane. In the dayside magnetosphere, the formation of the magnetodisk lobes is partially suppressed due to the proximity of the magnetopause. Therefore, during most encounters that took place near noon, Titan was embedded in highly distorted current sheet fields. Within the framework of this study, we not only provide a systematic classification of all Titan flybys between October 2004 and October 2009 as lobe-type or current sheet scenarios, but we also calculate the magnetospheric background field near Titan's orbit whenever possible. Our results show that so far, there is not a single Cassini flyby that matches the frequently applied picture of Titan's plasma interaction from the pre-Cassini era (background field homogeneous, stationary and perpendicular to the moon's orbital plane). The time scales upon which the ambient magnetospheric field close to Titan undergoes significant changes range between only a few minutes and up to several hours. The implications for the development of numerical models for Titan's local plasma interaction are discussed as well.
Fil: Simon, Sven. University of Cologne; Alemania
Fil: Wennmacher, Alexandre. University of Cologne; Alemania
Fil: Neubauer, Fritz M.. University of Cologne; Alemania
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: Kriegel, Hendrik. University of California; Estados Unidos
Fil: Saur, Joachim. University of Cologne; Alemania
Fil: Russell, Christopher T.. University of California; Estados Unidos
Fil: Dougherty, Michele K.. Imperial College London; Reino Unido
description We analyze the variability of the ambient magnetic field near Titan during Cassini encounters TA–T62 (October 2004–October 2009). Cassini magnetometer (MAG) data show that the moon's magnetic environment is strongly affected by its proximity to Saturn's warped and highly dynamic magnetodisk. In the nightside sector of Saturn's magnetosphere, the magnetic field near Titan is controlled by intense vertical flapping motions of the magnetodisk current sheet, alternately exposing the moon to radially stretched lobe-type fields and to more dipolar, but highly distorted current sheet fields. In southern summer, when most of the Cassini encounters took place, the magnetodisk current sheet was on average located above Titan's orbital plane. However, around equinox in August 2009, the distortions of Titan's magnetic environment due to the rapidly moving current sheet reached a maximum, thus suggesting that the equilibrium position of the sheet at that time was significantly closer to the moon's orbital plane. In the dayside magnetosphere, the formation of the magnetodisk lobes is partially suppressed due to the proximity of the magnetopause. Therefore, during most encounters that took place near noon, Titan was embedded in highly distorted current sheet fields. Within the framework of this study, we not only provide a systematic classification of all Titan flybys between October 2004 and October 2009 as lobe-type or current sheet scenarios, but we also calculate the magnetospheric background field near Titan's orbit whenever possible. Our results show that so far, there is not a single Cassini flyby that matches the frequently applied picture of Titan's plasma interaction from the pre-Cassini era (background field homogeneous, stationary and perpendicular to the moon's orbital plane). The time scales upon which the ambient magnetospheric field close to Titan undergoes significant changes range between only a few minutes and up to several hours. The implications for the development of numerical models for Titan's local plasma interaction are discussed as well.
publishDate 2010
dc.date.none.fl_str_mv 2010-08
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/11336/20156
Simon, Sven; Wennmacher, Alexandre; Neubauer, Fritz M.; Bertucci, Cesar; Kriegel, Hendrik; et al.; Titan's highly dynamic magnetic environment: A systematic survey of Cassini magnetometer observations from flybys TA-T62; Elsevier; Planetary and Space Science; 58; 10; 8-2010; 1230-1251
0032-0633
CONICET Digital
CONICET
url http://hdl.handle.net/11336/20156
identifier_str_mv Simon, Sven; Wennmacher, Alexandre; Neubauer, Fritz M.; Bertucci, Cesar; Kriegel, Hendrik; et al.; Titan's highly dynamic magnetic environment: A systematic survey of Cassini magnetometer observations from flybys TA-T62; Elsevier; Planetary and Space Science; 58; 10; 8-2010; 1230-1251
0032-0633
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.pss.2010.04.021
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0032063310001339
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 Elsevier
publisher.none.fl_str_mv Elsevier
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
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