Comments on solar linear force-free field and application of FFT analysis

Details Comments on solar linear force-free field and application of FFT analysis Comments on solar linear force-free field and application of FFT analysis

Nov 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004acasn..45..361s&link_type=abstract

Acta Astronomica Sinica, vol. 45, no. 4, p. 361-380

Statistics

Computation

1

Sun: Coronal Mass Ejections, Sun: Flares, Sun: Magnetic Fields, Methods: Analytical, Hα Filtergram

Scientific paper

Some comments are made on the computation of solar active region magnetic field in the last thirty years, especially on some errors in linear force-free field representations. A a new method based on quasi-linear force-free field is suggested. Also, fast Fourier transformation applied to linear force-free field computation is re-examined. As an example, the field configuration of NOAA 9165 active region is computed, using three different methods. The comparison between the computed results and the fine - filtergram observed at Gan-Yu station of Purple Mountain observatory.

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