Measurements of Three‐dimensional Coronal Magnetic Fields from Coordinated Extreme‐Ultraviolet and Radio Observations of a Solar Active Region Sunspot

2002 ◽  
Vol 574 (1) ◽  
pp. 453-466 ◽  
Author(s):  
Jeffrey W. Brosius ◽  
Enrico Landi ◽  
John W. Cook ◽  
Jeffrey S. Newmark ◽  
N. Gopalswamy ◽  
...  
Keyword(s):  
Active Region ◽  
Magnetic Fields ◽  
Extreme Ultraviolet ◽  
Three Dimensional ◽  
Solar Active Region ◽  
Radio Observations ◽  
Coronal Magnetic Fields

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).

scholarly journals Extreme ultraviolet emission lines of Ar XIV in solar active region and flare spectra

2003 ◽  
Vol 346 (1) ◽  
pp. 58-62 ◽  
Author(s):  
F. P. Keenan ◽  
A. C. Katsiyannis ◽  
R. H. G. Reid ◽  
A. K. Pradhan ◽  
H. L. Zhang ◽  
...  
Keyword(s):  
Active Region ◽  
Extreme Ultraviolet ◽  
Solar Active Region ◽  
Emission Lines ◽  
Ultraviolet Emission

Three‐dimensional Stereoscopic Analysis of Solar Active Region Loops. II.SOHO/EIT Observations at Temperatures of 1.5–2.5 MK

2000 ◽  
Vol 531 (2) ◽  
pp. 1129-1149 ◽  
Author(s):  
Markus J. Aschwanden ◽  
David Alexander ◽  
Neal Hurlburt ◽  
Jeffrey S. Newmark ◽  
Werner M. Neupert ◽  
...  
Keyword(s):  
Active Region ◽  
Three Dimensional ◽  
Solar Active Region

Analysis of a Solar Active Region Extreme‐Ultraviolet Spectrum from SERTS‐97

2000 ◽  
Vol 543 (2) ◽  
pp. 1016-1026 ◽  
Author(s):  
Jeffrey W. Brosius ◽  
Roger J. Thomas ◽  
Joseph M. Davila ◽  
Enrico Landi
Keyword(s):  
Active Region ◽  
Extreme Ultraviolet ◽  
Ultraviolet Spectrum ◽  
Solar Active Region

Extreme‐Ultraviolet Emission Lines of Sxiiin Solar Active Region and Flare Spectra

2002 ◽  
Vol 566 (1) ◽  
pp. 521-527 ◽  
Author(s):  
F. P. Keenan ◽  
A. C. Katsiyannis ◽  
R. S. I. Ryans ◽  
R. H. G. Reid ◽  
H. L. Zhang ◽  
...  
Keyword(s):  
Active Region ◽  
Extreme Ultraviolet ◽  
Solar Active Region ◽  
Emission Lines ◽  
Ultraviolet Emission
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