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Deflection of the Interstellar Neutral Hydrogen Flow Across the Heliospheric Interface

Bertaux, J. L.; Lallement, R.; Quémerais, E. +3 more

Using an absorption cell, we measured the Doppler shifts of the interstellar hydrogen resonance glow to show the direction of the neutral hydrogen flow as it enters the inner heliosphere. The neutral hydrogen flow is found to be deflected relative to the helium flow by about 4°. The most likely explanation of this deflection is a distortion of the…

Solar Wind Origin in Coronal Funnels

Wilhelm, Klaus; Marsch, Eckart; Wang, Jing-Xiu +4 more

The origin of the solar wind in solar coronal holes has long been unclear. We establish that the solar wind starts flowing out of the corona at heights above the photosphere between 5 megameters and 20 megameters in magnetic funnels. This result is obtained by a correlation of the Doppler-velocity and radiance maps of spectral lines emitted by var…