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dc.contributor.author
Ma, Y. J.
dc.contributor.author
Russell, C. T.
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Nagy, A. F.
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Toth, G.
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Bertucci, Cesar
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Dougherty, M. K.
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Neubauer, F. M.
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Wellbrock, A.
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Coates, A. J.
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Garnier, P.
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Wahlund, J. E.
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Cravens, T. E.
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Crary, F. J.
dc.date.available
2017-07-14T15:48:53Z
dc.date.issued
2009-03-07
dc.identifier.citation
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
dc.identifier.issn
0148-0227
dc.identifier.uri
http://hdl.handle.net/11336/20531
dc.description.abstract
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.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Geophysical Union
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Titan
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Interaction
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Mhd
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Simulation
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Astronomía
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Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Time-dependent global MHD simulations of Cassini T32 flyby: From magnetosphere to magnetosheath
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-07-14T14:08:25Z
dc.journal.volume
114
dc.journal.number
A03204
dc.journal.pagination
1-13
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Nueva York
dc.description.fil
Fil: Ma, Y. J.. University of California; Estados Unidos
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Fil: Russell, C. T.. University of California; Estados Unidos
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Fil: Nagy, A. F.. University of Michigan; Estados Unidos
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Fil: Toth, G.. University of Michigan; Estados Unidos
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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
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Fil: Dougherty, M. K.. Imperial College London; Reino Unido
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Fil: Neubauer, F. M.. University of Cologne; Alemania
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Fil: Wellbrock, A.. University College London; Estados Unidos
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Fil: Coates, A. J.. University College London; Estados Unidos
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Fil: Garnier, P.. Swedish Institute of Space Physics; Suecia
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Fil: Wahlund, J. E.. Swedish Institute of Space Physics; Suecia
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Fil: Cravens, T. E.. University of Kansas; Estados Unidos
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Fil: Crary, F. J.. Southwest Research Institute; Estados Unidos
dc.journal.title
Journal of Geophysical Research
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1029/2008JA013676/full
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1029/2008JA013676
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