Relationships between a potential field-source surface model of the coronal magnetic field and properties of the solar wind at 1 AU

Details Relationships between a potential field-source surface model of the coronal magnetic field and properties of the solar wind at 1 AU Relationships between a potential field-source surface model of the coronal magnetic field and properties of the solar wind at 1 AU

Jun 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984jgr....89.3957s&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 89, June 1, 1984, p. 3957-3961. Research supported by the Max C. Fleischm

Physics

18

Potential Fields, Solar Corona, Solar Magnetic Field, Solar Wind Velocity, Surface Properties, Field Strength, International Sun Earth Explorer 3, Stellar Models

Scientific paper

A comparison is made between the properties at the source surface of a potential field model of the solar corona and solar wind properties observed with ISEE 3 at 1 AU and extrapolated back to the sun. This is done for three consecutive Carrington rotations in the summer of 1979. The already known properties of a velocity minimum at the interplanetary current sheet and a tendency for the average velocity to increase with longitudinal distance from the current sheet are recovered. A better correlation between source surface properties and velocity is demonstrated by using the field strength on the source surface rather than longitudinal distance from the current sheet. Applying a simple algorithm to distinguish between transient and corotating interplanetary variations substantially increases the correlation. However, given a reasonable estimate of the number of degrees of freedom for the sample, only the correlation between source surface field strength and flow speed after the transients have been eliminated is statistically significant at the 1 percent level.

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