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Modeling, Analysis,...
Modeling, Analysis, and Interpretation of Photoelectron Energy Spectra at Enceladus Observed by Cassini
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- Taylor, S. A. (author)
- Univ Coll London, Mullard Space Sci Lab, Dorking, Surrey, England; UCL Birkbeck, Ctr Planetary Sci, London, England
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- Coates, A. J. (author)
- Univ Coll London, Mullard Space Sci Lab, Dorking, Surrey, England; UCL Birkbeck, Ctr Planetary Sci, London, England
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- Jones, G. H. (author)
- Univ Coll London, Mullard Space Sci Lab, Dorking, Surrey, England; UCL Birkbeck, Ctr Planetary Sci, London, England
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- Wellbrock, A. (author)
- Univ Coll London, Mullard Space Sci Lab, Dorking, Surrey, England; UCL Birkbeck, Ctr Planetary Sci, London, England
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- Fazakerley, A. N. (author)
- Univ Coll London, Mullard Space Sci Lab, Dorking, Surrey, England
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- Desai, R. T. (author)
- Univ Coll London, Mullard Space Sci Lab, Dorking, Surrey, England; UCL Birkbeck, Ctr Planetary Sci, London, England
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- Caro-Carretero, R. (author)
- Univ Coll London, Mullard Space Sci Lab, Dorking, Surrey, England; Univ Pontificia Comillas, Escuela Tecn Super Ingn ICAI, Madrid, Spain
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- Morooka, Michiko (author)
- Uppsala universitet,Institutet för rymdfysik, Uppsalaavdelningen
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- Schippers, P. (author)
- Observ Paris, LESIA, Meudon, France
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- Waite, J. H. (author)
- Southwest Res Inst, San Antonio, TX USA
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(creator_code:org_t)
- 2018
- 2018
- English.
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In: Journal of Geophysical Research - Space Physics. - 2169-9380 .- 2169-9402. ; 123:1, s. 287-296
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Abstract
Subject headings
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- The Electron Spectrometer (ELS) of the Cassini Plasma Spectrometer has observed photoelectrons produced in the plume of Enceladus. These photoelectrons are observed during Enceladus encounters in the energetic particle shadow where the spacecraft is largely shielded from penetrating radiation by the moon. We present a complex electron spectrum at Enceladus including evidence of two previously unidentified electron populations at 6–10 eV and 10–16 eV. We estimate that the proportion of “hot” (>15 eV) to “cold” (<15 eV) electrons during the Enceladus flybys is ≈ 0.1–0.5%. We have constructed a model of photoelectron production in the plume and compared it with ELS Enceladus flyby data by scaling and energy shifting according to spacecraft potential. We suggest that the complex structure of the electron spectrum observed can be explained entirely by photoelectron production in the plume ionosphere.
Subject headings
- NATURVETENSKAP -- Fysik -- Fusion, plasma och rymdfysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Fusion, Plasma and Space Physics (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Taylor, S. A.
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Coates, A. J.
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Jones, G. H.
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Wellbrock, A.
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Fazakerley, A. N ...
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Desai, R. T.
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show more...
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Caro-Carretero, ...
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Morooka, Michiko
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Schippers, P.
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Waite, J. H.
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Fusion Plasma an ...
- Articles in the publication
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Journal of Geoph ...
- By the university
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Uppsala University