Localization on the sun of regions of outflow of quasi-steady high-velocity streams of solar wind

Details Localization on the sun of regions of outflow of quasi-steady high-velocity streams of solar wind Localization on the sun of regions of outflow of quasi-steady high-velocity streams of solar wind

Aug 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977sva....21..486k&link_type=abstract

(Astronomicheskii Zhurnal, vol. 54, July-Aug. 1977, p. 859-869.) Soviet Astronomy, vol. 21, July-Aug. 1977, p. 486-491. Transla

Astronomy and Astrophysics

Astronomy

Magnetic Field Configurations, Radiation Sources, Solar Magnetic Field, Solar Wind Velocity, Astronomical Maps, Photosphere, Solar Corona, Solar Cycles

Scientific paper

Properties of solar regions that constitute sources of quasi-steady high-speed solar-wind streams are analyzed. It is found that the high-speed streams are localized in coronal regions with open, nonradially divergent magnetic-field configurations. These regions are shown to be characterized by a low level of coronal emission and decreased density; as a rule, they adjoin coronal condensations. A model is presented which can explain some features of the velocity variations of high-speed streams over a solar activity cycle. The results obtained are taken as confirmation of the previous conclusion that active regions play a major role in producing high-speed solar-wind streams which affect geophysical activity. It is concluded that the magnetic-field geometry in the corona determines the sites where quasi-steady high-speed solar-wind streams are localized.

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