Hydrogen from Jupiter's atmosphere in the Jovian magnetosphere

Details Hydrogen from Jupiter's atmosphere in the Jovian magnetosphere Hydrogen from Jupiter's atmosphere in the Jovian magnetosphere

Nov 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993p%26ss...41..947m&link_type=abstract

Planetary and Space Science, Volume 41, Issue 11-12, p. 947-951.

Computer Science

2

Scientific paper

The passage of Ulysses through Jupiter's magnetosphere presents a new opportunity to investigate the contribution to the Jovian magnetosphere of ions of atmospheric origin. A determination of the magnetospheric H+/He2+ flux ratio allows an estimate of the relative abundance of ionospheric material in the Jovian magnetosphere. We find that the H+/He2+ flux ratio, measured in the energy/charge range between 0.65 and 60 keV/e, steadily increases from a solar wind level of 25 at the magnetopause to a value of 700 at the point of closest approach, and then steadily decreases whilst approaching the magnetopause on the outbound path. We conclude from this that: (1) there is a significant solar wind component throughout the outer and middle magnetosphere; and (2) a significant fraction of the protons in the middle magnetosphere are of nonsolar origin.

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