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dc.contributor.author
Edberg, N. J. T.
dc.contributor.author
Andrews, D. J.
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Bertucci, Cesar
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Gurnett, D. A.
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Holmberg, M. K. G.
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Jackman, C. M.
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Kurth, W. S.
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Menietti, J. D.
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Opgenoorth, H. J.
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Shebanits, O.
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Vigren, E.
dc.contributor.author
Wahlund, J. E.
dc.date.available
2017-06-08T21:23:27Z
dc.date.issued
2015-10
dc.identifier.citation
Edberg, N. J. T.; Andrews, D. J.; Bertucci, Cesar; Gurnett, D. A.; Holmberg, M. K. G.; et al.; Effects of Saturn's magnetospheric dynamics on Titan's ionosphere; Wiley; Journal of Geophysical Research A: Space Physics; 120; 10; 10-2015; 8884-8898
dc.identifier.issn
2169-9380
dc.identifier.uri
http://hdl.handle.net/11336/17843
dc.description.abstract
We use the Cassini Radio and Plasma Wave Science/Langmuir probe measurements of the electron density from the first 110 flybys of Titan to study how Saturn´s magnetosphere influences Titan´s ionosphere. The data is first corrected for biased sampling due to varying solar zenith angle and solar energy flux (solar cycle effects). We then present results showing that the electron density in Titan´s ionosphere, in the altitude range 1600-2400 km, is increased by about a factor of 2.5 when Titan is located on the nightside of Saturn (Saturn local time (SLT) 21-03 h) compared to when on the dayside (SLT 09-15 h). For lower altitudes (1100-1600 km) the main dividing factor for the ionospheric density is the ambient magnetospheric conditions. When Titan is located in the magnetospheric current sheet, the electron density in Titan´s ionosphere is about a factor of 1.4 higher compared to when Titan is located in the magnetospheric lobes. The factor of 1.4 increase in between sheet and lobe flybys is interpreted as an effect of increased particle impact ionization from 200 eV sheet electrons. The factor of 2.5 increase in electron density between flybys on Saturn´s nightside and dayside is suggested to be an effect of the pressure balance between thermal plus magnetic pressure in Titan´s ionosphere against the dynamic pressure and energetic particle pressure in Saturn´s magnetosphere.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Wiley
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Cassini
dc.subject
Ionosphere
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Saturn'S Magnetosphere
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Titan
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Astronomía
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Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Effects of Saturn's magnetospheric dynamics on Titan's ionosphere
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-06-06T14:49:54Z
dc.journal.volume
120
dc.journal.number
10
dc.journal.pagination
8884-8898
dc.journal.pais
Estados Unidos
dc.description.fil
Fil: Edberg, N. J. T.. University of Iowa; Estados Unidos. Swedish Institute of Space Physics; Suecia
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Fil: Andrews, D. J.. Swedish Institute of Space Physics; Suecia
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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: Gurnett, D. A.. University of Iowa; Estados Unidos
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Fil: Holmberg, M. K. G.. Swedish Institute of Space Physics; Suecia
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Fil: Jackman, C. M.. University Of Southampton; Reino Unido
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Fil: Kurth, W. S.. University of Iowa; Estados Unidos
dc.description.fil
Fil: Menietti, J. D.. University Of Iowa; Estados Unidos
dc.description.fil
Fil: Opgenoorth, H. J.. Swedish Institute of Space Physics; Suecia
dc.description.fil
Fil: Shebanits, O.. Swedish Institute of Space Physics; Suecia
dc.description.fil
Fil: Vigren, E.. Swedish Institute of Space Physics; Suecia
dc.description.fil
Fil: Wahlund, J. E.. Swedish Institute of Space Physics; Suecia
dc.journal.title
Journal of Geophysical Research A: Space Physics
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1002/2015JA021373
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1002/2015JA021373/full
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