Energetics of the Oxygen Ion Escape From Venus in a Hybrid Simulation

Details Energetics of the Oxygen Ion Escape From Venus in a Hybrid Simulation Energetics of the Oxygen Ion Escape From Venus in a Hybrid Simulation

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufm.p11b1203j&link_type=abstract

American Geophysical Union, Fall Meeting 2009, abstract #P11B-1203

Physics

Plasma Physics

[6033] Planetary Sciences: Comets And Small Bodies / Magnetospheres, [6295] Planetary Sciences: Solar System Objects / Venus, [7846] Space Plasma Physics / Plasma Energization

Scientific paper

We study the Venus Express observations of the Venus-solar wind interaction and the related atmospheric ion erosion by a hybrid simulation (HYB-Venus). Oxygen is the dominant ion species in the Venusian atmosphere and its total escape rate from the planet is about 1025 s-1. According to our recent study this value is close a limit at which the planetary ions start to affect the global structure of the magnetosphere in a hybrid simulation. Here we consider possible causes for this limit and study the energetics of the oxygen ion acceleration. Further, we also consider the global energy flow as the Poynting flux and the plasma kinetic energy in the system including the bulk and thermal components.

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