scholarly journals THE VERTICAL-CURRENT APPROXIMATION NONLINEAR FORCE-FREE FIELD CODE—DESCRIPTION, PERFORMANCE TESTS, AND MEASUREMENTS OF MAGNETIC ENERGIES DISSIPATED IN SOLAR FLARES

2016 ◽  
Vol 224 (2) ◽  
pp. 25 ◽  
Author(s):  
Markus J. Aschwanden
Keyword(s):  
Solar Flares ◽  
Free Field ◽  
Performance Tests ◽  
Tests And Measurements ◽  
Nonlinear Force ◽  
Current Approximation ◽  
Force Free Field

scholarly journals Nonlinear force-free modeling of magnetic fields in flare-productive active regions

2015 ◽  
Vol 11 (S320) ◽  
pp. 167-174
Author(s):  
M. S. Wheatland ◽  
S. A. Gilchrist
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Boundary Data ◽  
Numerical Solutions ◽  
Free Field ◽  
Active Regions ◽  
Coronal Magnetic Field ◽  
Nonlinear Force ◽  
The Magnetic Field ◽  
Force Free Field

AbstractWe review nonlinear force-free field (NLFFF) modeling of magnetic fields in active regions. The NLFFF model (in which the electric current density is parallel to the magnetic field) is often adopted to describe the coronal magnetic field, and numerical solutions to the model are constructed based on photospheric vector magnetogram boundary data. Comparative tests of NLFFF codes on sets of boundary data have revealed significant problems, in particular associated with the inconsistency of the model and the data. Nevertheless NLFFF modeling is often applied, in particular to flare-productive active regions. We examine the results, and discuss their reliability.

scholarly journals Quasi–Static Evolution of Force–Free Magnetic Fields and a Model for Two–Ribbon Solar Flares

1985 ◽  
Vol 107 ◽  
pp. 221-224
Author(s):  
J. J. Aly
Keyword(s):  
Magnetic Fields ◽  
Solar Flares ◽  
Free Field ◽  
Qualitative Theory ◽  
Force Free Field ◽  
Open Configuration

We show that a sheared 2–D force–free field can evolve in a quasi–static way towards an open configuration, and apply this result to a qualitative theory of two–ribbon solar flares.

Studying Magnetic Field Variations Accompanying the 2011 June 7 Eruptive Event, by Using Nonlinear Force-Free Field Modeling

Solar Physics ◽  
2020 ◽  
Vol 295 (4) ◽  
Author(s):  
Y. I. Egorov ◽  
V. G. Fainshtein ◽  
I. I. Myshyakov ◽  
S. A. Anfinogentov ◽  
G. V. Rudenko
Keyword(s):  
Magnetic Field ◽  
Free Field ◽  
Eruptive Event ◽  
Field Modeling ◽  
Nonlinear Force ◽  
Magnetic Field Variations ◽  
Force Free Field

scholarly journals A NEW CODE FOR NONLINEAR FORCE-FREE FIELD EXTRAPOLATION OF THE GLOBAL CORONA

2012 ◽  
Vol 755 (1) ◽  
pp. 62 ◽  
Author(s):  
Chaowei Jiang ◽  
Xueshang Feng ◽  
Changqing Xiang
Keyword(s):  
Free Field ◽  
Nonlinear Force ◽  
Force Free Field

A New and Fast Way to Reconstruct a Nonlinear Force‐free Field in the Solar Corona

2006 ◽  
Vol 649 (2) ◽  
pp. 1084-1092 ◽  
Author(s):  
M. T. Song ◽  
C. Fang ◽  
Y. H. Tang ◽  
S. T. Wu ◽  
Y. A. Zhang
Keyword(s):  
Solar Corona ◽  
Free Field ◽  
Nonlinear Force ◽  
Force Free Field

scholarly journals Nonlinear Force‐free Field Modeling of a Solar Active Region around the Time of a Major Flare and Coronal Mass Ejection

2008 ◽  
Vol 675 (2) ◽  
pp. 1637-1644 ◽  
Author(s):  
C. J. Schrijver ◽  
M. L. DeRosa ◽  
T. Metcalf ◽  
G. Barnes ◽  
B. Lites ◽  
...  
Keyword(s):  
Active Region ◽  
Coronal Mass Ejection ◽  
Free Field ◽  
Solar Active Region ◽  
Field Modeling ◽  
Major Flare ◽  
Nonlinear Force ◽  
Mass Ejection ◽  
Force Free Field

Reconstructing Spherical Nonlinear Force‐free Field in the Solar Corona

2007 ◽  
Vol 666 (1) ◽  
pp. 491-500 ◽  
Author(s):  
M. T. Song ◽  
C. Fang ◽  
H. Q. Zhang ◽  
Y. H. Tang ◽  
S. T. Wu ◽  
...  
Keyword(s):  
Solar Corona ◽  
Free Field ◽  
Nonlinear Force ◽  
Force Free Field

scholarly journals A Comparison Between Nonlinear Force-Free Field and Potential Field Models Using Full-Disk SDO/HMI Magnetogram

Solar Physics ◽  
2013 ◽  
Vol 289 (3) ◽  
pp. 831-845 ◽  
Author(s):  
Tilaye Tadesse ◽  
T. Wiegelmann ◽  
P. J. MacNeice ◽  
B. Inhester ◽  
K. Olson ◽  
...  
Keyword(s):  
Potential Field ◽  
Free Field ◽  
Nonlinear Force ◽  
Force Free Field ◽  
Full Disk

scholarly journals Magnetic Connectivity Between Active Regions 10987, 10988, and 10989 by Means of Nonlinear Force-Free Field Extrapolation

Solar Physics ◽  
2011 ◽  
Vol 277 (1) ◽  
pp. 119-130 ◽  
Author(s):  
Tilaye Tadesse ◽  
T. Wiegelmann ◽  
B. Inhester ◽  
A. Pevtsov
Keyword(s):  
Free Field ◽  
Active Regions ◽  
Nonlinear Force ◽  
Force Free Field
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