Ionospheric electrons in Titan's tail: Plasma structure during the Cassini T9 encounter

Andrew J. Coates, F. J. Crary, D. T. Young, K. Szegö, C. S. Arridge, Z. Bebesi, Jr C. Sittler, R. E. Hartle, T. W. Hill

Research output: Contribution to journalArticle

57 Citations (Scopus)

Abstract

We present results from the CAPS electron spectrometer obtained during the downstream flyby of Titan on 26 December 2005, which occurred during a period of enhanced plasma pressure inside the magnetosphere. The electron data show an unusual split signature with two principal intervals of interest outside the nominal corotation wake. Interval 1 shows direct evidence for ionospheric plasma escape at several RT in Titan's tail. Interval 2 shows a complex plasma structure, a mix between plasma of ionospheric and magnetospheric origin. We suggest a mechanism for plasma escape based on ambipolar electric fields set up by suprathermal ionospheric photoelectrons.

Original languageEnglish
Article numberL24S05
JournalGeophysical Research Letters
Volume34
Issue number24
DOIs
Publication statusPublished - Dec 28 2007

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Titan
encounters
ionospherics
plasma
electron
intervals
escape
electrons
corotation
plasma pressure
magnetospheres
wakes
photoelectrons
signatures
magnetosphere
spectrometers
electric field
spectrometer
electric fields

ASJC Scopus subject areas

  • Earth and Planetary Sciences (miscellaneous)

Cite this

Coates, A. J., Crary, F. J., Young, D. T., Szegö, K., Arridge, C. S., Bebesi, Z., ... Hill, T. W. (2007). Ionospheric electrons in Titan's tail: Plasma structure during the Cassini T9 encounter. Geophysical Research Letters, 34(24), [L24S05]. https://doi.org/10.1029/2007GL030919

Ionospheric electrons in Titan's tail : Plasma structure during the Cassini T9 encounter. / Coates, Andrew J.; Crary, F. J.; Young, D. T.; Szegö, K.; Arridge, C. S.; Bebesi, Z.; Sittler, Jr C.; Hartle, R. E.; Hill, T. W.

In: Geophysical Research Letters, Vol. 34, No. 24, L24S05, 28.12.2007.

Research output: Contribution to journalArticle

Coates, AJ, Crary, FJ, Young, DT, Szegö, K, Arridge, CS, Bebesi, Z, Sittler, JC, Hartle, RE & Hill, TW 2007, 'Ionospheric electrons in Titan's tail: Plasma structure during the Cassini T9 encounter', Geophysical Research Letters, vol. 34, no. 24, L24S05. https://doi.org/10.1029/2007GL030919
Coates, Andrew J. ; Crary, F. J. ; Young, D. T. ; Szegö, K. ; Arridge, C. S. ; Bebesi, Z. ; Sittler, Jr C. ; Hartle, R. E. ; Hill, T. W. / Ionospheric electrons in Titan's tail : Plasma structure during the Cassini T9 encounter. In: Geophysical Research Letters. 2007 ; Vol. 34, No. 24.
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