Momentum flux invariance and solar wind sources

Details Momentum flux invariance and solar wind sources Momentum flux invariance and solar wind sources

Mar 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983soph...83..379s&link_type=abstract

(Lindau Norkshop on the Source Region of the Solar Wind, 9th, Lindau, West Germany, Nov. 1981) Solar Physics (ISSN 0038-0938), v

Astronomy and Astrophysics

Astronomy

11

Helios 2, Solar Wind Velocity, Spaceborne Astronomy, Flux Density, Momentum, Proton Density (Concentration), Regression Analysis, Solar Cycles, Solar Protons

Scientific paper

New solar wind data from Helios-2 are used to study, in a statistical fashion, the relation between proton number density n, flow speed u and heliocentric distance r. It is shown that the average of n(u-squared) (r-squared) does not depend on flow speed nor on distance, verifying the previously established invariance of momentum flux density mn(u-squared) carried by the solar wind. Averages of nm(u-squared) from different spacecraft do not show correlation with the solar cycle. Rather, the close agreement (to within 1.8 percent) of values from Helios-1 and Helios-2 suggests that the momentum flux density carried by the solar wind may be also constant during the solar cycle.

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