The Magnetic Helicity Budget of Solar Active Regions and Coronal Mass Ejections

2003 ◽  
Vol 594 (2) ◽  
pp. 1033-1048 ◽  
Author(s):  
A. Nindos ◽  
J. Zhang ◽  
H. Zhang
Keyword(s):  
Coronal Mass Ejections ◽  
Active Regions ◽  
Magnetic Helicity ◽  
Solar Active Regions

scholarly journals Trend of photospheric magnetic helicity flux in active regions generating halo coronal mass ejections

2010 ◽  
Vol 521 ◽  
pp. A56 ◽  
Author(s):  
A. Smyrli ◽  
F. Zuccarello ◽  
P. Romano ◽  
F. P. Zuccarello ◽  
S. L. Guglielmino ◽  
...  
Keyword(s):  
Coronal Mass Ejections ◽  
Active Regions ◽  
Magnetic Helicity

MAGNETIC HELICITY IN EMERGING SOLAR ACTIVE REGIONS

2014 ◽  
Vol 785 (1) ◽  
pp. 13 ◽  
Author(s):  
Y. Liu ◽  
J. T. Hoeksema ◽  
M. Bobra ◽  
K. Hayashi ◽  
P. W. Schuck ◽  
...  
Keyword(s):  
Active Regions ◽  
Magnetic Helicity ◽  
Solar Active Regions

Determination of magnetic helicity content of solar active regions from SOHO/MDI magnetograms

Solar Physics ◽  
2004 ◽  
Vol 223 (1-2) ◽  
pp. 39-55 ◽  
Author(s):  
Jongchul Chae ◽  
Yong-Jae Moon ◽  
Young-Deuk Park
Keyword(s):  
Active Regions ◽  
Magnetic Helicity ◽  
Solar Active Regions

A theoretical model for the magnetic helicity of solar active regions

2008 ◽  
Vol 41 (6) ◽  
pp. 893-896
Author(s):  
Piyali Chatterjee ◽  
Arnab Rai Choudhuri ◽  
Kristof Petrovay ◽  
Dibyendu Nandy
Keyword(s):  
Theoretical Model ◽  
Active Regions ◽  
Magnetic Helicity ◽  
Solar Active Regions

scholarly journals Magnetic Helicity of Solar Active Regions as Revealed by Vector Magnetograms and Coronal X-Ray Images

2012 ◽  
Vol 64 (3) ◽  
pp. 54 ◽  
Author(s):  
Haiqing Xu ◽  
Yu Gao ◽  
Hongqi Zhang ◽  
Takashi Sakurai ◽  
Masaoki Hagino ◽  
...  
Keyword(s):  
Active Regions ◽  
Magnetic Helicity ◽  
X Ray ◽  
Vector Magnetograms ◽  
Solar Active Regions

scholarly journals Transport of Magnetic Helicity and Dynamics of Solar Active Regions

2005 ◽  
Vol 13 ◽  
pp. 117-118 ◽  
Author(s):  
M. K. Georgoulis ◽  
B. J. LaBonte ◽  
D. M. Rust
Keyword(s):  
Time Series ◽  
Active Region ◽  
Lower Limit ◽  
Active Regions ◽  
Magnetic Helicity ◽  
Solar Active Regions ◽  
Linear Force

AbstractWe introduce a method to calculate the magnetic helicity density in a given active-region vector magnetogram, and a lower limit of it, based on a linear force-free (Iff) approximation. Moreover, we provide a lower limit of the total magnetic helicity in the active region (AR). A time series of magnetograms can be used to calculate the rate of helicity transport. The results can be then correlated with manifestations of the dynamical activity in ARs, such as flares and filament eruptions.

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