New Iterative Method of the Azimuth Ambiguity Resolution

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Presentation transcript:

New Iterative Method of the Azimuth Ambiguity Resolution Dr. A. Pevtsov National Solar Observatory

Magnetic field in the photosphere is not current-/force- free HOWEVER: Low resolution magnetograms are well represented by the potential magnetic field Non-potentiality increases with (higher) spatial resolution

(acute angle with reference) Select/change degree of smoothing (Box) Potential Field (or Up-Down) (first run) Original Data Smoothed magnetogram Reference azimuths Ambiguity resolution (acute angle with reference) (if Box > pixel) (if Box size = pixel) Final azimuths

Current problems/Advantages need high resolution magnetograms (low res. does not have enough pixels for iterations) - averaging at 0-360 boundary y x Advantages: Fast Resolution is done in image plane (full disk magnetograms)