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dc.contributor.author
Sillanpää, I.
dc.contributor.author
Young, D. T.
dc.contributor.author
Crary, F.
dc.contributor.author
Thomsen, M.
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Reisenfelc, D.
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Wahlund, J. E.
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Bertucci, Cesar
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Kallio, E.
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Jarvinen, R.
dc.contributor.author
Janhunen, P.
dc.date.available
2017-07-07T19:36:23Z
dc.date.issued
2011-07
dc.identifier.citation
Sillanpää, I.; Young, D. T.; Crary, F.; Thomsen, M.; Reisenfelc, D.; et al.; Cassini Plasma Spectrometer and hybrid model study on Titan's interaction: Effect of oxygen ions; American Geophysical Union; Journal of Geophysical Research; 116; a7; 7-2011; 1-18; 07223
dc.identifier.issn
0148-0227
dc.identifier.uri
http://hdl.handle.net/11336/19877
dc.description.abstract
During the Cassini Titan flyby on 2 July 2006 (T15), Titan was surrounded by a magnetospheric plasma flow with density about 0.1 cm‑3 as measured by Cassini Plasma Spectrometer (CAPS). A very low fraction of water group ions (O+) was detected in the flow dominated by hydrogen ions. We show that Titan's plasma interaction can be highly sensitive to the small fraction of oxygen ions in the magnetospheric flow. The ion quantities of the magnetospheric flow during the flyby were obtained from numerical moments calculated from the CAPS measurements; the average ambient magnetic field was determined using the Cassini magnetometer data. We simulated the flyby using a global hybrid model; the water group abundance in the flow was varied in three simulation runs. Based on the simulation results, the oxygen content has an especially notable effect on the extent of Titan's induced magnetosphere. A multi-instrument analysis was performed comparing with the simulations, whereby a comprehensive picture of the plasma properties around Titan during this flyby was obtained. Comparisons between the hybrid model simulations and Cassini measurements during the flyby point toward O+ density in the undisturbed magnetospheric flow having been around 0.008 cm‑3, which would have accounted for one half of the dynamic pressure of the flow.
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
Planetary Sciences: Fluid Planets: Magnetospheres
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Planetary Sciences: Comets And Small Bodies: Magnetospheres
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Planetary Sciences: Solar System Objects: Titan
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Space Plasma Physics: Mathematical And Numerical Techniques
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Astronomía
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Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Cassini Plasma Spectrometer and hybrid model study on Titan's interaction: Effect of oxygen ions
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-07-07T15:20:24Z
dc.journal.volume
116
dc.journal.number
a7
dc.journal.pagination
1-18; 07223
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Nueva York
dc.description.fil
Fil: Sillanpää, I.. Southwest Research Institute; Estados Unidos
dc.description.fil
Fil: Young, D. T.. Southwest Research Institute; Estados Unidos
dc.description.fil
Fil: Crary, F.. Southwest Research Institute; Estados Unidos
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Fil: Thomsen, M.. Los Alamos National Laboratory,; Estados Unidos
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Fil: Reisenfelc, D.. University of Montana; Estados Unidos
dc.description.fil
Fil: Wahlund, J. E.. Swedish Institute of Space Physics; Suecia
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
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Fil: Kallio, E.. Finnish Meteorological Institute,; Finlandia
dc.description.fil
Fil: Jarvinen, R.. Finnish Meteorological Institute; Finlandia
dc.description.fil
Fil: Janhunen, P.. Finnish Meteorological Institute,; Finlandia
dc.journal.title
Journal of Geophysical Research
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1029/2011JA016443
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1029/2011JA016443/full
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