scholarly journals STRUCTURE AND STABILITY OF MAGNETIC FIELDS IN SOLAR ACTIVE REGION 12192 BASED ON NONLINEAR FORCE-FREE FIELD MODELING

2016 ◽  
Vol 818 (2) ◽  
pp. 168 ◽  
Author(s):  
S. Inoue ◽  
K. Hayashi ◽  
K. Kusano
Keyword(s):  
Active Region ◽  
Magnetic Fields ◽  
Free Field ◽  
Solar Active Region ◽  
Structure And Stability ◽  
Field Modeling ◽  
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

scholarly journals NONLINEAR FORCE-FREE FIELD MODELING OF A SOLAR ACTIVE REGION USINGSDO/HMI AND SOLIS/VSM DATA

2012 ◽  
Vol 144 (2) ◽  
pp. 33 ◽  
Author(s):  
J. K. Thalmann ◽  
A. Pietarila ◽  
X. Sun ◽  
T. Wiegelmann
Keyword(s):  
Active Region ◽  
Free Field ◽  
Solar Active Region ◽  
Field Modeling ◽  
Nonlinear Force ◽  
Force Free Field

scholarly journals FORMATION AND ERUPTION OF AN ACTIVE REGION SIGMOID. I. A STUDY BY NONLINEAR FORCE-FREE FIELD MODELING

2013 ◽  
Vol 780 (1) ◽  
pp. 55 ◽  
Author(s):  
Chaowei Jiang ◽  
S. T. Wu ◽  
Xueshang Feng ◽  
Qiang Hu
Keyword(s):  
Active Region ◽  
Free Field ◽  
Field Modeling ◽  
Nonlinear Force ◽  
Force Free Field

OBSERVATIONS AND NONLINEAR FORCE-FREE FIELD MODELING OF ACTIVE REGION 10953

2009 ◽  
Vol 691 (1) ◽  
pp. 105-114 ◽  
Author(s):  
Yingna Su ◽  
Adriaan van Ballegooijen ◽  
Bruce W. Lites ◽  
Edward E. Deluca ◽  
Leon Golub ◽  
...  
Keyword(s):  
Active Region ◽  
Free Field ◽  
Field Modeling ◽  
Nonlinear Force ◽  
Force Free Field

scholarly journals A CRITICAL ASSESSMENT OF NONLINEAR FORCE-FREE FIELD MODELING OF THE SOLAR CORONA FOR ACTIVE REGION 10953

2009 ◽  
Vol 696 (2) ◽  
pp. 1780-1791 ◽  
Author(s):  
Marc L. DeRosa ◽  
Carolus J. Schrijver ◽  
Graham Barnes ◽  
K. D. Leka ◽  
Bruce W. Lites ◽  
...  
Keyword(s):  
Active Region ◽  
Solar Corona ◽  
Free Field ◽  
Critical Assessment ◽  
Field Modeling ◽  
Nonlinear Force ◽  
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.

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 Topological study of active region 11158

2013 ◽  
Vol 8 (S300) ◽  
pp. 479-480
Author(s):  
Jie Zhao ◽  
Hui Li ◽  
Etienne Pariat ◽  
Brigitte Schmieder ◽  
Yang Guo ◽  
...  
Keyword(s):  
Active Region ◽  
Magnetic Fields ◽  
Free Field ◽  
Three Dimensional ◽  
Projection Data ◽  
Solar Dynamics Observatory ◽  
Equal Area ◽  
Linear Force ◽  
Solar Dynamics ◽  
Force Free Field

AbstractWith the cylindrical equal area (CEA) projection data from the Helioseismic and Magnetic Imager (HMI) onboard the Solar Dynamics Observatory (SDO), we reconstructed the three-dimensional (3D) magnetic fields in the corona, using a non-linear force-free field (NLFFF) extrapolation method every 12 minutes during five days, to calculate the squashing degree factor Q in the volume. The results show that this AR has an hyperbolic flux tube (HFT) configuration, a typical topology of quadrupole, which is stable even during the two large flares (M6.6 and X2.2 class flares).

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