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Detailed Reference Information |
Luhmann, J.G. (1994). Oxygen in the heliosphere. Journal of Geophysical Research 99: doi: 10.1029/94JA00488. issn: 0148-0227. |
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Oxygen within the heliosphere, whether neutral or ionized, comes from both the external source in the local interstellar medium (LISM) and internal sources. If transient cometary sources are neglected, Jupiter is the strongest of the internal sources by virtue of its corotation and charge exchange driven neutral wind. O+ pickup ions are born where the penetrating neutrals lose an electron as a result of photoionization, charge exchange with solar wind protons, or solar wind electron impact ionization. The region of the heliosphere from which these pickup ions arise depends on the phase of the solar cycle as well as on the velocities of the neutrals. The present model of neutral O populations and their ionization suggests that Jovian pickup ions can dominate the inner heliospheric O+ population if the LISM neutrals are strongly filtered at the heliopause, or are excluded by strong ionizing fluxes from the Sun. Other heliospheric species such as sulfur and nitrogen may have similar origins. These planetary sources need to be taken into account in the interpretation of interplanetary gas and ion composition observations. ¿ American Geophysical Union 1994 |
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BACKGROUND DATA FILES |
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Abstract |
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Keywords
Interplanetary Physics, Interstellar gas, Interplanetary Physics, Solar wind plasma, Planetology, Fluid Planets, Interactions with particles and fields, Planetology, Comets and Small Bodies, Interactions with solar wind plasma and fields |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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