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Velocity of the local interstellar medium relative to the sun from interstellar helium flux measurements onboard the Ulysses and IBEX spacecraft

Katushkina, O. A.; Izmodenov, V. V.; Provornikova, E. A.

The question of determining the relative velocity of the local interstellar medium (LISM) based on direct interstellar helium flux measurements in the Solar system is considered. Such measurements were made onboard the Ulysses spacecraft in 1990-2007 at a distance of 2-5 AU from the Sun and have been made from 2009 to the present day onboard the I…