Time-dependent calculations of Jupiter's ionosphere

Details Time-dependent calculations of Jupiter's ionosphere Time-dependent calculations of Jupiter's ionosphere

Jan 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jgr....87..167c&link_type=abstract

Journal of Geophysical Research, vol. 87, Jan. 1, 1982, p. 167-170. NASA-supported research.

Physics

6

Hydrogen Ions, Ionospheric Electron Density, Jupiter Atmosphere, Planetary Ionospheres, Proton Density (Concentration), Vertical Distribution, Atmospheric Ionization, Ion Production Rates, Radio Observation, Voyager 1 Spacecraft, Jupiter, Ionosphere, Time Dependency, Distribution, Protons, Ionization, Voyager 1, Voyager 2, Asymmetry, Thermal Properties, Diurnal Variations, Magnitude, Dynamics, Nightside, Turbopause, Models, Density, Diffusion, Temperatures, Hydrogen, Electrons, Altitude, Radiation

Scientific paper

Time-dependent calculations of the vertical distribution of protons in Jupiter's ionosphere show that the accumulation of protons in the topside ionosphere produced from solar ionizing radiation overwhelms the loss to vibrationally excited molecular hydrogen at vibrational temperatures as high at 1600 K. At 2500 K the ionization is decreased over the entire planet with little diurnal variation. For Voyager 1 then, unless the H2 vibrational temperature is as high as thousands of degrees and the topside density of H2 is asymmetric and larger by orders of magnitude, dynamical processes are more likely causes of the low electron densities seen in the nightside upper ionosphere. A calculation of the H3(+) density profile showed that the distribution above the turbopause is controlled by diffusion.

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