Electric Current and Magnetic Shear in Solar Active Regions

2001 ◽  
Vol 557 (1) ◽  
pp. L71-L74 ◽  
Author(s):  
Hongqi Zhang
Keyword(s):  
Electric Current ◽  
Active Regions ◽  
Magnetic Shear ◽  
Solar Active Regions

scholarly journals Electric-current Neutralization, Magnetic Shear, and Eruptive Activity in Solar Active Regions

2017 ◽  
Vol 846 (1) ◽  
pp. L6 ◽  
Author(s):  
Yang Liu ◽  
Xudong Sun ◽  
Tibor Török ◽  
Viacheslav S. Titov ◽  
James E. Leake
Keyword(s):  
Electric Current ◽  
Active Regions ◽  
Eruptive Activity ◽  
Magnetic Shear ◽  
Solar Active Regions

Electric-current Neutralization and Eruptive Activity of Solar Active Regions

2020 ◽  
Author(s):  
Tibor Torok ◽  
Yang Liu ◽  
James E. Leake ◽  
Xudong Sun ◽  
Viacheslav S. Titov
Keyword(s):  
Electric Current ◽  
Active Regions ◽  
Total Current ◽  
Eruptive Activity ◽  
Physical Conditions ◽  
Limited Success ◽  
Solar Active Regions ◽  
Good Proxy ◽  
Mass Ejection ◽  
Magnetogram Data

<p>The physical conditions that determine the eruptive activity of solar active regions (ARs) are still not well understood. Various proxies for predicting eruptive activity have been suggested, with relatively limited success. Moreover, it is presently unclear under which conditions an eruption will remain confined to the low corona or produce a coronal mass ejection (CME).</p><p>Using vector magnetogram data from SDO/HMI, we investigate the association between electric-current neutralization and eruptive activity for a sample of ARs. We find that the vast majority of CME-producing ARs are characterized by a strongly non-neutralized total current, while the total current in ARs that do not produce CMEs is almost perfectly neutralized, even if those ARs produce strong (X-class) confined flares. This suggests that the degree of current neutralization can serve as a good proxy for assessing the ability of ARs to produce CMEs. </p><p> </p>

scholarly journals Neutral‐Line Magnetic Shear and Enhanced Coronal Heating in Solar Active Regions

1997 ◽  
Vol 482 (1) ◽  
pp. 519-534 ◽  
Author(s):  
D. A. Falconer ◽  
R. L. Moore ◽  
J. G. Porter ◽  
G. A. Gary ◽  
T. Shimizu
Keyword(s):  
Neutral Line ◽  
Active Regions ◽  
Coronal Heating ◽  
Magnetic Shear ◽  
Solar Active Regions

Explorations of electric current system in solar active regions

Solar Physics ◽  
1987 ◽  
Vol 109 (2) ◽  
pp. 307-320 ◽  
Author(s):  
Y. J. Ding ◽  
M. J. Hagyard ◽  
A. C. Deloach ◽  
Q. F. Hong ◽  
X. P. Liu
Keyword(s):  
Electric Current ◽  
Current System ◽  
Active Regions ◽  
Solar Active Regions

THE LIMIT OF MAGNETIC-SHEAR ENERGY IN SOLAR ACTIVE REGIONS

2012 ◽  
Vol 750 (1) ◽  
pp. 24 ◽  
Author(s):  
Ronald L. Moore ◽  
David A. Falconer ◽  
Alphonse C. Sterling
Keyword(s):  
Active Regions ◽  
Magnetic Shear ◽  
Solar Active Regions ◽  
Shear Energy
Sign in / Sign up

Export Citation Format

Share Document