IDENTIFICATION AND ELIMINATION OF THE RESIDUAL AMBIGUITY IN THE SIGN OF OBSERVED PHOTOSPHERIC MAGNETIC-FIELDS

Authors
CUPERMAN S LI J SEMEL M
Citation
S. Cuperman et al., IDENTIFICATION AND ELIMINATION OF THE RESIDUAL AMBIGUITY IN THE SIGN OF OBSERVED PHOTOSPHERIC MAGNETIC-FIELDS, Astronomy and astrophysics, 278(1), 1993, pp. 279-287
Citations number
11
Categorie Soggetti
Astronomy & Astrophysics
Journal title
Astronomy and astrophysics → ACNP
ISSN journal
00046361
Volume
278
Issue
1
Year of publication
1993
Pages
279 - 287
Database
ISI
SICI code
0004-6361(1993)278:1<279:IAEOTR>2.0.ZU;2-M
Abstract
The existing methods for the removal of the 180-degrees ambiguity in t he sign of the observed transverse photospheric magnetic field present some inherent-computational and/or intrinsic limitations. In this wor k we propose and demonstrate suitable procedures for the identificatio n and elimination of the residual 180-degrees ambiguity in the sign of B(perpendicular-to) observed fields, that is of the ambiguity which i s not removed by the various methods in use. These procedures are test ed on the case of force-free magnetic field configurations for which e xact analytical solutions to compare with exist.