Physics
Scientific paper
Mar 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989soph..119..197t&link_type=abstract
Solar Physics (ISSN 0038-0938), vol. 119, no. 1, 1989, p. 197-206. Research supported by the National Natural Science Foundation
Physics
8
Magnetic Variations, Solar Protons, Solar Wind Velocity, Proton Energy, Statistical Analysis
Scientific paper
A comparison has been made between the predictions of the theory for radial variations of both Alfvenic fluctuations and solar wind proton temperatures proposed by Tu (1987, 1988) and the statistical results of hourly averaged plasma and magnetic field data observed by Helios 1 and 2 from launch through 1980 for different solar wind speed regimes. The comparison shows that for speed ranges between 500-800 km/s, the radial variation of the proton temperature between 0.3 and 1 AU can be explained by heating from the cascade energy which is determined by the radial variation of the total variance of magnetic field vector.
Freeman John W.
Lopez Robert E.
Tu Chuan-Yi
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