A comparison of different solar magnetic field extrapolation procedures

Details A comparison of different solar magnetic field extrapolation procedures A comparison of different solar magnetic field extrapolation procedures

Nov 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982soph...81...69s&link_type=abstract

Solar Physics, vol. 81, Nov. 1982, p. 69-80.

Physics

22

Boundary Value Problems, Lines Of Force, Magnetic Signatures, Solar Magnetic Field, Boundary Conditions, Extrapolation, Force-Free Magnetic Fields, Line Of Sight, Magnetic Flux, Solar Atmosphere

Scientific paper

In order to study the influence of the different treatment of the boundary conditions in different extrapolation schemes, the procedures of Schmidt (1964), Nakagawa and Raadu (1972), and Seehafer (1978) have been applied to the same (line-of-sight) magnetogram. The main field structure is similar for all three procedures, whereas in details there are clear differences, for example in the direction of the field lines in the overview, the heights to which the field lines extend, the number of field lines that leave the region, the field strength decrease with height, and the calculated amounts of magnetic energy in the chromospheric and coronal parts of the considered active region.

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