Global Structure

Electromagnetic Supersonic

Perhaps the most important lesson learned from the Voyager and Ulysses missions, complemented by theory and modeling efforts, is that the physics of the outer heliosphere is influenced profoundly by the LISM since we are embedded in the local interstellar cloud (LIC). This is because neutral hydrogen atoms flow into the heliosphere and are the dominant component, by mass, from 10 AU outward (i.e., beyond Saturn). As described below, the ionization of interstellar neutrals in the supersonic...

Bibliography

Frisch, 1977, High-resolution observations of the Lyman-a sky background, Astrophys. J. 212, p. 300. Ajello, J.M., et al., 1987, Solar cycle study of interplanetary Lyman-a variations Pioneer Venus orbiter sky background results, Astrophys. J. 317, p. 964. Axford, W.I., 1972, The interaction of the solar wind with the interstellar medium, Solar Wind, NASA Special Publication SP308, p. 609. Baranov, V.B., 1990, Space Sci. Rev. 52, p. 89. Baranov, V.B., and Y.G. Malama,...