Determination of the coronal magnetic field from vector magnetograph data

Details Determination of the coronal magnetic field from vector magnetograph data Determination of the coronal magnetic field from vector magnetograph data

Dec 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991saic.rept.....m&link_type=abstract

Final Report, 15 Nov. 1990 - 14 Dec. 1991 Science Applications International Corp., San Diego, CA.

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Applications

Algorithms, Solar Corona, Solar Flares, Solar Magnetic Field, Data Acquisition, Estimating, Magnetic Signatures, Magnetometers, Solar Observatories

Scientific paper

A new algorithm was developed, tested, and applied to determine coronal magnetic fields above solar active regions. The coronal field above NOAA active region AR5747 was successfully estimated on 20 Oct. 1989 from data taken at the Mees Solar Observatory of the Univ. of Hawaii. It was shown that observational data can be used to obtain realistic estimates of coronal magnetic fields. The model has significantly extended the realism with which the coronal magnetic field can be inferred from observations. The understanding of coronal phenomena will be greatly advanced by a reliable technique, such as the one presented, for deducing the detailed spatial structure of the coronal field. The payoff from major current and proposed NASA observational efforts is heavily dependent on the success with which the coronal field can be inferred from vector magnetograms. In particular, the present inability to reliably obtain the coronal field has been a major obstacle to the theoretical advancement of solar flare theory and prediction. The results have shown that the evolutional algorithm can be used to estimate coronal magnetic fields.

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