Polar solar wind and interstellar wind properties from interplanetary Lyman-alpha radiation measurements

Details Polar solar wind and interstellar wind properties from interplanetary Lyman-alpha radiation measurements Polar solar wind and interstellar wind properties from interplanetary Lyman-alpha radiation measurements

Feb 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981a%26a....95...80w&link_type=abstract

Astronomy and Astrophysics, vol. 95, no. 1, Feb. 1981, p. 80-85. Deutsche Forschungsgemeinschaft

Astronomy and Astrophysics

Astrophysics

18

Interplanetary Gas, Lyman Alpha Radiation, Solar Wind, Solar Wind Velocity, Mariner 10 Space Probe, Radiation Measurement

Scientific paper

The analysis of Mariner 10 observations of Lyman-alpha resonance radiation shows an increase of interplanetary neutral hydrogen densities above the solar poles. This increase is caused by a latitudinal variation of the solar wind velocity and/or flux. Using both the Mariner 10 results and other solar wind observations, the values of the solar wind flux and velocity with latitude are determined for several cases of interest. The latitudinal variation of interplanetary hydrogen gas, arising from the solar wind latitudinal variation, is shown to be most pronounced in the inner solar system. From this result it is shown that spacecraft Lyman-alpha observations are more sensitive to the latitudinal anisotropy for a spacecraft location in the inner solar system near the downwind axis.

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