Abstract
Three dimensional ion bulk flows in the mass loaded region around comet P/Giacobini-Zinner are investigated using energetic ion data from the EPAS experiment on the ICE spacecraft. Relatively abrupt changes in flow speed of ∼ 100-km s −1 are found at the bow wave crossings. Within the bow wave, the flow is deflected away from the comet tail axis by up to 30°. Ions with energies of ∼ 300-keV are found in this region, suggesting that other ion acceleration processes occur in addition to solar wind pickup.
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