naa a22 4500 510732461 CHVBK 20180411082958.0 cr unu---uuuuu 180411e20130801xx s 000 0 eng 10.1134/S1063772913080064 doi (NATIONALLICENCE)springer-10.1134/S1063772913080064 Determining the spatial configurations of the coronal magnetic fields of solar active regions [Elektronische Daten] [G. Rudenko, I. Mysh'yakov, S. Anfinogentov] The fundamental possibility of reliably removing the π ambiguity from the transverse magnetic field detected in solar vector magnetographic measurements, independent of the location of the vector magnetograms on the solar disk is demonstrated. The corrected magnetograms are then used as boundary conditions for the reconstruction of the three-dimensional magnetic field. The calculated field lines agree well with observed non-potential magnetic loops. The π ambiguity is removed using a modified Metropolis algorithm adapted to a spherical geometry. The spatial configuration of the magnetic field is calculated in a nonlinear force-free approximation using an optimization method. Tests of the new algorithm for resolving the π ambiguity are demonstrated for various model cases and comparisons with results of the NPFC method. Pleiades Publishing, Ltd., 2013 Rudenko G. Institute of Solar-Terrestrial Physics, Siberian Branch of the Russian Academy of Sciences, ul. Lermontova 126a, 664033, Irkutsk, Russia aut Mysh'yakov I. Institute of Solar-Terrestrial Physics, Siberian Branch of the Russian Academy of Sciences, ul. Lermontova 126a, 664033, Irkutsk, Russia aut Anfinogentov S. Institute of Solar-Terrestrial Physics, Siberian Branch of the Russian Academy of Sciences, ul. Lermontova 126a, 664033, Irkutsk, Russia aut Astronomy Reports Springer US; http://www.springer-ny.com 57/8(2013-08-01), 622-635 1063-7729 57:8<622 2013 57 11444 https://doi.org/10.1134/S1063772913080064 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S1063772913080064 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Rudenko G. Institute of Solar-Terrestrial Physics, Siberian Branch of the Russian Academy of Sciences, ul. Lermontova 126a, 664033, Irkutsk, Russia aut NATIONALLICENCE 700 1- Mysh'yakov I. Institute of Solar-Terrestrial Physics, Siberian Branch of the Russian Academy of Sciences, ul. Lermontova 126a, 664033, Irkutsk, Russia aut NATIONALLICENCE 700 1- Anfinogentov S. Institute of Solar-Terrestrial Physics, Siberian Branch of the Russian Academy of Sciences, ul. Lermontova 126a, 664033, Irkutsk, Russia aut NATIONALLICENCE 773 0- Astronomy Reports Springer US; http://www.springer-ny.com 57/8(2013-08-01), 622-635 1063-7729 57:8<622 2013 57 11444 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer