Numerical calculation of force-free field in solar active regions. II. An improved Chiu-Hilton method

Details Numerical calculation of force-free field in solar active regions. II. An improved Chiu-Hilton method Numerical calculation of force-free field in solar active regions. II. An improved Chiu-Hilton method

Mar 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985cha%26a...9...44w&link_type=abstract

Chinese Astronomy and Astrophysics, Volume 9, Issue 1, p. 44-48.

Astronomy and Astrophysics

Astrophysics

1

Scientific paper

A good method of finding the magnetic field above an active region from the normal field at the photosphere in the linear force-free field model is the one by Chiu and Hilton [1]. In its previous applications, however, the eigenfunctions that appear in the problem were simply discarded for lack of a practical way of their determination. In this paper we examine the effect of the eigenfunctions on the field configuration in the solution. We propose a method of estimating the eigenfunctions from Hα photographs and hence to get a more realistic solution.

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