Energetic Oxygen and Sulfur Charge States in the Outer Jovian Magnetosphere: Insights From the Cassini Jupiter Flyby
| Autor: | T. H. Smith, Frederic Allegrini, Stamatios M. Krimigis, R. J. Wilson, Sarah K. Vines, Chris Paranicas, George Clark, Donald G. Mitchell, T. K. Kim, Peter Delamere, Robert Allen, D. C. Hamilton, Fran Bagenal |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Juno
010504 meteorology & atmospheric sciences Astrophysics::High Energy Astrophysical Phenomena chemistry.chemical_element Magnetosphere Astrophysics Magnetosphere: Outer 010502 geochemistry & geophysics 01 natural sciences Oxygen Jovian Ion Jupiter Planetary Sciences: Solar System Objects Saturn Research Letter Magnetospheric Physics Planetary Sciences: Solid Surface Planets Planetary Sciences: Fluid Planets 0105 earth and related environmental sciences Physics Spectrometer Plasma Planetary Magnetospheres Research Letters Geophysics chemistry Transport Processes Magnetospheres Physics::Space Physics General Earth and Planetary Sciences Space Plasma Physics Planetary Sciences: Comets and Small Bodies Cassini Astrophysics::Earth and Planetary Astrophysics Space Sciences Composition |
| Zdroj: | Geophysical Research Letters |
| ISSN: | 1944-8007 0094-8276 |
| Popis: | On 10 January 2001, Cassini briefly entered into the magnetosphere of Jupiter, en route to Saturn. During this excursion into the Jovian magnetosphere, the Cassini Magnetosphere Imaging Instrument/Charge‐Energy‐Mass Spectrometer detected oxygen and sulfur ions. While Charge‐Energy‐Mass Spectrometer can distinguish between oxygen and sulfur charge states directly, only 95.9 ± 2.9 keV/e ions were sampled during this interval, allowing for a long time integration of the tenuous outer magnetospheric (~200 RJ) plasma at one energy. For this brief interval for the 95.9 keV/e ions, 96% of oxygen ions were O+, with the other 4% as O2+, while 25% of the energetic sulfur ions were S+, 42% S2+, and 33% S3+. The S2+/O+ flux ratio was observed to be 0.35 (±0.06 Poisson error). Key Points Cassini measured the relative charge state abundances of 95.9 keV/e oxygen and sulfur in the outer magnetosphere (~200 RJ) of JupiterThe flux of 95.9 keV/e O+ was higher than that of S2+, with S2+ being the most abundant charge state among sulfur ionsThe relative abundances of 95.9 keV/e heavy ions are compared to thermal ions in the inner to middle magnetosphere |
| Databáze: | OpenAIRE |
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