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Correcting the projection effects of solar vector magnetogram
Li, H
AbstractWe conduct planar and spherical corrections for the projection effects of the Huairou solar vector magnetograms. The corrected magnetograms are considerably different from observed ones, and the two corrections lead to different magnetic configuration. We also discuss the influences of the corrections on magnetic shear, current helicity, etc. The neutral line is obviously distorted after the transform. The transforms generally decrease/ increase the average shear angle on the neutral line when the active region is in the eastern/western hemisphere by several degrees. The corrections reduce the current helicity imbalance and sometimes even changes its sign. The current helicity imbalance may change its sign in its evolution due to emerging fluxes. The corrections increase the noise level of B-z greatly, and decrease the noise level of B-t a little.
Subject AreaAstronomy & Astrophysics
Document Type期刊论文
Recommended Citation
GB/T 7714
Li, H. Correcting the projection effects of solar vector magnetogram[J]. SOLAR-TERRESTRIAL MAGNETIC ACTIVITY AND SPACE ENVIRONMENT,2002,14:67—70.
APA Li, H.(2002).Correcting the projection effects of solar vector magnetogram.SOLAR-TERRESTRIAL MAGNETIC ACTIVITY AND SPACE ENVIRONMENT,14,67—70.
MLA Li, H."Correcting the projection effects of solar vector magnetogram".SOLAR-TERRESTRIAL MAGNETIC ACTIVITY AND SPACE ENVIRONMENT 14(2002):67—70.
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