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Neutral interstellar He parameters in front of the heliosphere 1994-2007

Bzowski, M.; Witte, M.; Banaszkiewicz, M. +3 more

Context. A recent analysis of IBEX measurements of the neutral interstellar He flux showed that the inflow velocity vector is different from the results of an earlier analysis of observations from the GAS instrument onboard Ulysses. A recently published compilation of published results on the helium inflow direction from the past ~40 years suggest…

Traveling solar-wind bulk-velocity fluctuations and their effects on electron heating in the heliosphere

Verscharen, Daniel; Fahr, Hans J.; Chashei, Igor V.

Ambient plasma electrons undergo strong heating in regions associated with compressive bulk-velocity jumps ΔU that travel through the interplanetary solar wind. The heating is generated by their specific interactions with the jump-inherent electric fields. After this energy gain is thermalized by the shock passage through the operation of the Bune…