On the reality of potential magnetic fields in the solar corona

Details On the reality of potential magnetic fields in the solar corona On the reality of potential magnetic fields in the solar corona

Oct 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978soph...59..313p&link_type=abstract

Solar Physics, vol. 59, Oct. 1978, p. 313-330.

Astronomy and Astrophysics

Astronomy

22

Magnetic Field Configurations, Potential Fields, Solar Corona, Solar Magnetic Field, Magnetic Measurement, Skylab Program, Spaceborne Astronomy

Scientific paper

Global magnetic field calculations based on potential field theory are presented for Carrington rotations 1601-1610 during the Skylab period. The computations provide a quantitative test of the spatial correspondence between calculated open and closed field distributions in the solar corona with observed brightness structures. The observed structures considered are coronal holes representing open geometries and the K-coronal brightness distribution which presumably outlines the closed field regions in the corona. While the comparison between computed open field line locations and coronal holes shows a generally good spatial correspondence in spatial location on the sun, the areas occupied by the open field seem somewhat smaller than the corresponding areas of X-ray holes. The general correspondence between bright regions in the K-corona and computed closed field regions is found to be good. Explanations are considered for the finding that the neutral lines at a given longitude tend systematically to lie somewhat closer to the poles than the brightness maxima for all rotations considered.

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