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physics.space-ph2025
What defines stationarity in space plasmas
George Livadiotis, David J. McComas
Starting from the concept of entropy defect in thermodynamics, we construct the entropy formulation of space plasmas, and then use it to develop a measure of their stationarity. In…
physics.space-ph2018
In Situ Observations of Preferential Pickup Ion Heating at an Interplanetary Shock
E. J. Zirnstein, D. J. McComas, R. Kumar +6
Non-thermal pickup ions (PUIs) are created in the solar wind (SW) by charge-exchange between SW ions (SWIs) and slow interstellar neutral atoms. It has long been theorized, but not…