Physics
Scientific paper
Sep 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989soph..120..235v&link_type=abstract
Solar Physics (ISSN 0038-0938), vol. 120, no. 2, 1989, p. 235-247. Research supported by USAF.
Physics
28
Photosphere, Solar Magnetic Field, Coordinate Transformations, Magnetic Signatures, Noise
Scientific paper
A potential field calculation for off disk-center vector magnetograms that uses all the three components of the measured field is investigated. There is neither any need for interpolation of grid points between the image plane and the heliographic plane nor for an extension or a truncation to a heliographic rectangle. Hence, the method provides the maximum information content from the photospheric field as well as the most consistent potential field independent of the viewing angle. The introduction of polarimetric noise produces a less tolerant extrapolation procedure than using the line-of-sight extrapolation, but the resultant standard deviation is still small enough for the practical utility of this method.
Gary Gilmer A.
Venkatakrishnan Parameshwaran
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