Estimates of solar wind heating inside 0.3 AU

Details Estimates of solar wind heating inside 0.3 AU Estimates of solar wind heating inside 0.3 AU

Jan 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988georl..15...88f&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 15, Jan. 1988, p. 88-91.

Other

40

Solar Corona, Solar Heating, Solar Wind, Stellar Models, Helios 1, Power Spectra, Proton Energy, Temperature Distribution, Velocity Distribution

Scientific paper

The author normalizes the Helios 1 proton temperature data to 0.3 AU to establish a base temperature-velocity curve at that distance and ask what solar wind heating rates, versus velocity, closer to the sun, are required to predict that curve. The results indicate that the slope of the solar wind temperature gradient for high-speed streams, inside 0.3 AU, is about half of that found beyond this distance. The very low-speed wind on the other hand is found to expand adiabatically all the way out. Intermediate speed winds have enhanced heating rates in proportion to their velocities.

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