Search Publications
The Role of Pickup Ions on the Structure of the Venusian Bow Shock and its Implications for the Termination Shock
Zank, Gary P.; Zhang, Tielong; Wang, Shui +5 more
The recent crossing of the termination shock by Voyager 2 has demonstrated the important role of pickup ions (PUIs) in the physics of collisionless shocks. The Venus Express (VEX) spacecraft orbits Venus in a 24 hr elliptical orbit that crosses the bow shock twice a day. VEX provides a unique opportunity to investigate the role of PUIs on the stru…
Heliospheric Energetic Neutral Hydrogen Measured with ASPERA-3 and ASPERA-4
Barabash, S.; Grigoriev, A.; Wurz, P. +6 more
We re-analyze the signal of non-planetary energetic neutral atoms (ENAs) in the 0.4-5.0 keV range measured with the Neutral Particle Detector (NPD) of the ASPERA-3 and ASPERA-4 experiments on board the Mars and Venus Express satellites. Due to improved knowledge of sensor characteristics and exclusion of data sets affected by instrument effects, t…