On magnetospheric electron impact ionisation and dynamics in Titan's ram-side and polar ionosphere &ndash; A Cassini case study

K. Agren; J. E. Wahlund; R. Modolo; D. Lummerzheim; M. Galand; I. Müller-Wodarg; P. Canu; W. S. Kurth; T. E. Cravens; R. V. Yelle; J. H. Waite; A. J. Coates; G. R. Lewis; D. T. Young; C. Bertucci; M. K. Dougherty

doi:10.5194/angeo-25-2359-2007

On magnetospheric electron impact ionisation and dynamics in Titan's ram-side and polar ionosphere – A Cassini case study

K. Agren, J. E. Wahlund, R. Modolo, D. Lummerzheim, M. Galand, I. Müller-Wodarg, P. Canu, W. S. Kurth, T. E. Cravens, R. V. Yelle, J. H. Waite, A. J. Coates, G. R. Lewis, D. T. Young, C. Bertucci, M. K. Dougherty

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75 Scopus citations

Abstract

We present data from the sixth Cassini flyby of Titan (T5), showing that the magnetosphere of Saturn strongly interacts with the moon's ionosphere and exo-ionosphere. A simple electron ionisation model provides a reasonable agreement with the altitude structure of the ionosphere. Furthermore, we suggest that the dense and cold exo-ionosphere (from the exobase at 1430 km and outward to several Titan radii from the surface) can be explained by magnetospheric forcing and other transport processes whereas exospheric ionisation by impacting low energy electrons seems to play a minor role.

Original language	English (US)
Pages (from-to)	2359-2369
Number of pages	11
Journal	Annales Geophysicae
Volume	25
Issue number	11
DOIs	https://doi.org/10.5194/angeo-25-2359-2007
State	Published - 2007

ASJC Scopus subject areas

Astronomy and Astrophysics
Geology
Atmospheric Science
Earth and Planetary Sciences (miscellaneous)
Space and Planetary Science

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Agren, K., Wahlund, J. E., Modolo, R., Lummerzheim, D., Galand, M., Müller-Wodarg, I., Canu, P., Kurth, W. S., Cravens, T. E., Yelle, R. V., Waite, J. H., Coates, A. J., Lewis, G. R., Young, D. T., Bertucci, C., & Dougherty, M. K. (2007). On magnetospheric electron impact ionisation and dynamics in Titan's ram-side and polar ionosphere – A Cassini case study. Annales Geophysicae, 25(11), 2359-2369. https://doi.org/10.5194/angeo-25-2359-2007

Agren, K, Wahlund, JE, Modolo, R, Lummerzheim, D, Galand, M, Müller-Wodarg, I, Canu, P, Kurth, WS, Cravens, TE, Yelle, RV, Waite, JH, Coates, AJ, Lewis, GR, Young, DT, Bertucci, C & Dougherty, MK 2007, 'On magnetospheric electron impact ionisation and dynamics in Titan's ram-side and polar ionosphere – A Cassini case study', Annales Geophysicae, vol. 25, no. 11, pp. 2359-2369. https://doi.org/10.5194/angeo-25-2359-2007

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abstract = "We present data from the sixth Cassini flyby of Titan (T5), showing that the magnetosphere of Saturn strongly interacts with the moon's ionosphere and exo-ionosphere. A simple electron ionisation model provides a reasonable agreement with the altitude structure of the ionosphere. Furthermore, we suggest that the dense and cold exo-ionosphere (from the exobase at 1430 km and outward to several Titan radii from the surface) can be explained by magnetospheric forcing and other transport processes whereas exospheric ionisation by impacting low energy electrons seems to play a minor role.",

author = "K. Agren and Wahlund, {J. E.} and R. Modolo and D. Lummerzheim and M. Galand and I. M{\"u}ller-Wodarg and P. Canu and Kurth, {W. S.} and Cravens, {T. E.} and Yelle, {R. V.} and Waite, {J. H.} and Coates, {A. J.} and Lewis, {G. R.} and Young, {D. T.} and C. Bertucci and Dougherty, {M. K.}",

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doi = "10.5194/angeo-25-2359-2007",

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AU - Agren, K.

AU - Wahlund, J. E.

AU - Modolo, R.

AU - Lummerzheim, D.

AU - Galand, M.

AU - Müller-Wodarg, I.

AU - Canu, P.

AU - Kurth, W. S.

AU - Cravens, T. E.

AU - Yelle, R. V.

AU - Waite, J. H.

AU - Coates, A. J.

AU - Lewis, G. R.

AU - Young, D. T.

AU - Bertucci, C.

AU - Dougherty, M. K.

PY - 2007

Y1 - 2007

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AB - We present data from the sixth Cassini flyby of Titan (T5), showing that the magnetosphere of Saturn strongly interacts with the moon's ionosphere and exo-ionosphere. A simple electron ionisation model provides a reasonable agreement with the altitude structure of the ionosphere. Furthermore, we suggest that the dense and cold exo-ionosphere (from the exobase at 1430 km and outward to several Titan radii from the surface) can be explained by magnetospheric forcing and other transport processes whereas exospheric ionisation by impacting low energy electrons seems to play a minor role.

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On magnetospheric electron impact ionisation and dynamics in Titan's ram-side and polar ionosphere – A Cassini case study

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On magnetospheric electron impact ionisation and dynamics in Titan's ram-side and polar ionosphere &ndash; A Cassini case study

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On magnetospheric electron impact ionisation and dynamics in Titan's ram-side and polar ionosphere – A Cassini case study