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dc.contributor.author
Simon, Sven
dc.contributor.author
Wennmacher, Alexandre
dc.contributor.author
Neubauer, Fritz M.
dc.contributor.author
Bertucci, Cesar
dc.contributor.author
Kriegel, Hendrik
dc.contributor.author
Russell, Christopher T.
dc.contributor.author
Dougherty, Michele K.
dc.date.available
2017-07-13T21:20:54Z
dc.date.issued
2010-10
dc.identifier.citation
Simon, Sven; Wennmacher, Alexandre; Neubauer, Fritz M.; Bertucci, Cesar; Kriegel, Hendrik; et al.; Dynamics of Saturn's magnetodisk near Titan's orbit: Comparison of Cassini magnetometer observations from real and virtual Titan flybys; Pergamon-Elsevier Science Ltd; Planetary and Space Science; 58; 10-2010; 1625-1635
dc.identifier.issn
0032-0633
dc.identifier.uri
http://hdl.handle.net/11336/20444
dc.description.abstract
We analyze the variability of the ambient magnetospheric field along Titan’s orbit at 20.3 Saturn radii. However, while our preceding study (Simon et al., 2010) focused on Cassini magnetometer observations from the 62 Titan flybys (TA–T62) between October 2004 and October 2009, the present work discusses magnetic field data that were collected near Titan’s orbit when the moon was far away. In analogy to the observations during TA–T62, the magnetospheric fields detected during these 79 ‘‘virtual’’ Titan flybys are strongly affected by the presence of Saturn’s bowl-shaped and highly dynamic magnetodisk current sheet. We therefore provide a systematic classification of the magnetic field observations as magnetodisk current sheet or lobe-type scenarios. Among the 141 (62 real+79 virtual) crossings of Titan’s orbit between July 2004 and December 2009, only 17 encounters (9 real+8 virtual) took place within quiet, magnetodisk lobe-type fields. During another 50 encounters (21 real+29 virtual), rapid transitions between current sheet and lobe fields were observed around the moon’s orbital plane. Most of the encounters (54¼22 real+32 virtual) occurred when Titan’s orbit was embedded in highly distorted current sheet fields, thereby invalidating the frequently applied idealized picture of Titan interacting with a homogeneous and stationary magnetospheric background field. The locations of real and virtual Titan flybys are correlated to each other. Each of the 62 real Titan flybys possesses at least one virtual counterpart that occurred shortly before or after the real encounter and at nearly the same orbital position. A systematic comparison between Cassini magnetometer observations from the real Titan flybys and their virtual companions suggests that there is no clear evidence of Titan exerting a significant level of control on the vertical oscillatory motion of the magnetodisk near its orbit.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Pergamon-Elsevier Science Ltd
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Titan
dc.subject
Saturn'S Magnetosphere
dc.subject
Magnetodisk Current Sheet And Lobes
dc.subject
Cassini Flybys
dc.subject.classification
Astronomía
dc.subject.classification
Ciencias Físicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Dynamics of Saturn's magnetodisk near Titan's orbit: Comparison of Cassini magnetometer observations from real and virtual Titan flybys
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-07-13T14:03:41Z
dc.journal.volume
58
dc.journal.pagination
1625-1635
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Simon, Sven. University of Cologne; Alemania
dc.description.fil
Fil: Wennmacher, Alexandre. University of Cologne; Alemania
dc.description.fil
Fil: Neubauer, Fritz M.. University of Cologne; Alemania
dc.description.fil
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
dc.description.fil
Fil: Kriegel, Hendrik. Institute for Theoretical Physics; Alemania
dc.description.fil
Fil: Russell, Christopher T.. University of California; Estados Unidos
dc.description.fil
Fil: Dougherty, Michele K.. Imperial College London; Reino Unido
dc.journal.title
Planetary and Space Science
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0032063310002448
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.pss.2010.08.006


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