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Oxygen ion escape from Venus in a global hybrid simulation: role of the ionospheric O⁺ ions

Kallio, E.; Janhunen, P.; Barabash, S. +4 more

We study the solar wind induced oxygen ion escape from Venus' upper atmosphere and the Venus Express observations of the Venus-solar wind interaction by the HYB-Venus hybrid simulation code. We compare the simulation to the magnetic field and ion observations during an orbit of nominal upstream conditions. Further, we study the response of the ind…

Substorm activity in Venus's magnetotail

Barabash, S.; Futaana, Y.; Zhang, T. L. +5 more

The magnetotail of the induced magnetosphere of Venus is investigated through the magnetic field and plasma data of Venus Express. A comparison is made between two neutral sheet crossings. One crossing shows the magnetic field is rather quiet and the plasma instrument indicates a change from energetic (few 100 eV) to low energy (few 10 eV) ions. T…