The calculation of force-free fields from discrete flux distributions

Details The calculation of force-free fields from discrete flux distributions The calculation of force-free fields from discrete flux distributions

Dec 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975soph...45..275s&link_type=abstract

Solar Physics, vol. 45, Dec. 1975, p. 275-290. NASA-supported research.

Physics

17

Chromosphere, Force-Free Magnetic Fields, Magnetic Flux, Solar Magnetic Field, Astronomical Photography, H Alpha Line, Lines Of Force, Magnetic Signatures, Spectroheliographs

Scientific paper

This paper presents particularly simple mathematical formulas for the calculation of force-free fields of constant alpha from the distribution of discrete sources on a flat surface. The advantage of these formulas lies in their physical simplicity and the fact that they can be easily used in practice to calculate the fields. The disadvantage is that they are limited to fields of 'sufficiently small alpha'. These formulas may be useful in the study of chromospheric magnetic fields by the comparison of high-resolution H-alpha photographs and photospheric magnetograms.

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